Heat Sealing Paper Bag: Comprehensive Guide1. What is a Heat Sealing Paper Bag?A heat sealing paper bag is a specialized packaging solution that utilizes heat-activated adhesives to create an airtight and secure seal. Unlike traditional paper bags that rely on glue or stitching, these bags employ a thermoplastic coating (typically low-density polyethylene (LDPE) or polypropylene (PP) with thickness ranging from 12-50 microns) on the inner surface that melts when exposed to temperatures between 110°C to 180°C (230°F to 356°F) for 0.5-3 seconds under pressure of 0.2-0.5 MPa.The heat sealing process achieves peel strengths of 1.5-5 N/15mm (ASTM F88 standard) while maintaining burst strengths up to 200 kPa (ASTM D774). This creates a hermetic seal with oxygen transmission rates below 5 cc/m²/day and moisture vapor transmission rates under 10 g/m²/day (ASTM D3985 and E96 respectively).2. Key Characteristics with Technical Data2.1 Material CompositionThe base paper typically ranges from 60-120 gsm kraft paper with 30-50% recycled content. The heat-sealable layer constitutes 12-20% of total weight, with melting points precisely controlled within ±5°C tolerance for consistent performance.2.2 Barrier PropertiesAdvanced versions incorporate:Aluminum foil laminates (7-12 microns) reducing oxygen transmission to 0.05 cc/m²/daySilicon oxide coatings achieving water vapor barriers of 0.1 g/m²/dayEVOH layers with oxygen permeability below 0.01 cc/m²/day2.3 Mechanical StrengthThes

Greaseproof Paper: Applications, Characteristics, and MaintenanceIntroduction to Greaseproof PaperGreaseproof paper, also known as parchment paper or vegetable parchment, is a specialized paper product engineered to resist oil and grease penetration. This unique property is achieved through a manufacturing process called parchmentizing, where the paper undergoes sulfuric acid treatment or intensive mechanical refining that modifies the cellulose fibers to create a dense, non-porous structure. The resulting material exhibits oil resistance of 85-95% according to TAPPI T559 standards, making it invaluable in numerous industrial and domestic applications.Key Characteristics with Technical Data1. Oil and Grease ResistanceThe primary characteristic of greaseproof paper is its ability to resist oil penetration. Laboratory tests using the Kit test (TAPPI T559) demonstrate that high-quality greaseproof paper can withstand oil penetration for over 120 minutes at standard conditions (23°C, 50% RH), compared to just 2-5 minutes for regular paper. This resistance is quantified by the Kit rating system, with premium greaseproof papers achieving Kit 10-12 ratings.2. Heat ResistanceGreaseproof paper exhibits exceptional thermal stability, withstanding temperatures up to 220°C (428°F) for short durations and continuous use at 180°C (356°F). Differential Scanning Calorimetry (DSC) analysis shows no significant thermal degradation below 230°C, making it suitable for baking applications.

ECO Friendly Coating Paper: A Sustainable Packaging SolutionWhat is ECO Friendly Coating Paper?ECO Friendly Coating Paper is an innovative, sustainable packaging material that combines paper substrate with environmentally friendly coatings to replace traditional plastic laminates. This specialized paper features a thin, biodegradable coating (typically 5-20 microns thick) applied to paper surfaces (ranging from 80-300 gsm basis weight) to provide functional barrier properties while maintaining compostability. The coating formulations often utilize bio-based polymers such as PLA (polylactic acid), PHA (polyhydroxyalkanoates), or water-based acrylics with >90% biodegradation within 180 days under industrial composting conditions (ASTM D6400).Key Characteristics with Technical DataBarrier Performance: Provides oxygen transmission rates (OTR) of 5-50 cc/m²/day and water vapor transmission rates (WVTR) of 10-100 g/m²/day, suitable for short-to-medium shelf life products.Thermal Resistance: Withstands heat sealing temperatures up to 150-200°C with seal strengths of 2-5 N/15mm.Mechanical Properties: Exhibits tensile strength of 30-60 kN/m and elongation at break of 4-15%.Environmental Impact: Reduces carbon footprint by 40-70% compared to conventional plastic laminates, with >90% renewable content.Printability: Supports offset, flexo, and digital printing with surface energy of 38-42 dynes/cm for optimal ink adhesion.Compostability: Achieves 90% disintegration within 12 weeks and

Comprehensive Guide to Paper Roll Suppliers: Characteristics, Applications, and MaintenanceUnderstanding Paper Roll SuppliersPaper roll suppliers are specialized manufacturers and distributors that provide various types of paper rolls for industrial, commercial, and consumer applications. These suppliers typically offer rolls with widths ranging from 50mm to 3000mm and diameters between 75mm to 1500mm, catering to diverse industry requirements. The global paper roll market was valued at approximately $42.7 billion in 2022, with an expected CAGR of 3.8% from 2023 to 2030, according to Grand View Research.Key characteristics of professional paper roll suppliers include maintaining tight tolerances of ±0.5mm on width and ±1mm on diameter, with core concentricity maintained within 0.2mm for high-speed applications. Premium suppliers achieve roll density consistency within 5% variation across the entire roll length.Technical Specifications and FeaturesModern paper roll suppliers provide products with specific technical parameters:Basis Weight: Typically ranges from 40 gsm to 350 gsm, with thermal papers averaging 50-80 gsm and kraft papers 100-200 gsmTensile Strength: MD (machine direction) values between 3-15 kN/m and CD (cross direction) values of 1.5-8 kN/mMoisture Content: Maintained at 4-6% for optimal performance in printing applicationsRoll Hardness: Shore D hardness typically 60-85 to prevent deformation during handlingSplice Strength: Minimum 90% of base material streng

Water-Based Coating Paper: Properties, Applications, and MaintenanceWhat is Water-Based Coating Paper?Water-based coating paper is a specialized type of paper that has been treated with a water-based coating solution to enhance its surface properties. This coating typically consists of 20-40% solid content, including binders like acrylic resins, polyurethane dispersions, or styrene-butadiene latex, along with additives such as defoamers and wetting agents. The coating weight usually ranges from 5-20 g/m² (dry basis), applied through precision coating methods like blade coating, air knife coating, or rod coating.Key characteristics of water-based coating paper include:Surface Gloss: Ranges from 20-90 GU (Gloss Units) at 60° angle, depending on formulationWater Resistance: Cobb60 values typically <15 g/m², compared to >25 g/m² for uncoated paperPrintability: Ink absorption rates of 1.5-3.0 g/m² for offset printingTensile Strength: MD (Machine Direction) values of 40-80 N/15mm, CD (Cross Direction) 20-50 N/15mmOpacity: Typically >90% for 80 gsm papersHeat Resistance: Withstands temperatures up to 180-220°C for short durationsApplication ScenariosThe unique properties of water-based coating paper make it suitable for diverse applications across multiple industries:1. Printing and PackagingIn high-quality printing applications, water-based coated papers demonstrate excellent ink holdout with dot gain values of 12-18% (compared to 20-30% for uncoated stocks). They are particu

Coloured Greaseproof Paper: Comprehensive Technical Overview1. Definition and CompositionColoured greaseproof paper is a specialized packaging material composed of wood pulp (typically 60-80% alpha-cellulose content) that has undergone extended refining (30-60 minutes at 40-60°C) to create a dense fiber network with reduced porosity. The coloration is achieved through FDA-compliant food-grade dyes (0.5-3% by weight) that maintain stability at temperatures up to 220°C. The base paper typically has a basis weight of 30-120 g/m², with thickness ranging from 40-150 microns.Unlike standard greaseproof papers, the colored variants incorporate lightfast pigments that maintain chromatic stability (ΔE ≤ 3.0 after 500 hours of UV exposure per ISO 105-B02) while preserving the material's functional properties.2. Technical Properties and Performance DataPropertyTypical Value RangeTest MethodGrease ResistanceKit No. ≥ 10 (TAPPI T559)ASTM D722Burst Strength200-500 kPaISO 2758Tensile Strength (MD)40-80 N/15mmISO 1924-2Heat Sealability120-180°C rangeASTM F2029Oil Permeation Time>24 hours (at 23°C)ASTM F119Color Fastness4-5 (ISO 105-A02)AATCC 82.1 Barrier PropertiesThe material demonstrates exceptional barrier performance with water vapor transmission rates (WVTR) of 5-15 g/m²/24h (at 38°C, 90% RH per ASTM E96) and oxygen transmission rates (OTR) below 50 cm³/m²/24h (at 23°C, 0% RH per ASTM D3985). The surface energy ranges from 30-40 dynes/cm, contributing to its non-stick c

Introduction to Caiying Series Transfer PaperCaiying Series Transfer Paper is a high-performance heat transfer medium specifically designed for digital printing applications. This specialized paper enables the transfer of digitally printed designs onto various substrates through a heat press process. With its advanced coating technology, Caiying transfer paper achieves 94-98% ink absorption rate while maintaining dimensional stability within ±0.3% during the transfer process.The paper's unique formulation includes a 40-50 g/m² base weight with a precisely calibrated 12-18 micron coating thickness, optimized for both pigment and dye-based ink systems. This ensures minimal ink bleeding while achieving color gamut coverage exceeding 90% of Adobe RGB in final transfers.Key Technical CharacteristicsThermal Performance: Designed to withstand 180-220°C transfer temperatures for 15-30 seconds without curling or degradationMoisture Resistance: Maintains ≤2% moisture absorption in standard 50% RH environments, preventing premature activationTransfer Efficiency: Achieves ≥95% image transfer rate with proper application parametersSubstrate Compatibility: Suitable for cotton (100%), polyester (50/50 blends), and specialty fabrics with ≥85% transfer adhesion in peel testsOptical Brightness: Base paper maintains 92-96 ISO brightness for accurate color representationPrimary Application ScenariosThe versatility of Caiying Series Transfer Paper makes it suitable for numerous pro

IntroductionAluminum Coated Transfer Paper (ACTP) is a specialized substrate material engineered for high-performance thermal transfer applications. This composite material consists of a base paper layer coated with a precisely controlled aluminum layer, typically ranging from 0.5 to 5 microns in thickness, combined with a heat-activated adhesive system. The aluminum coating provides exceptional thermal conductivity (≈237 W/m·K), while the paper substrate offers flexibility and dimensional stability with a typical tensile strength of 30-50 N/cm in the machine direction.Key Characteristics and Technical SpecificationsThermal PerformanceThe aluminum coating achieves a thermal reflectivity of 85-95% across the infrared spectrum (2.5-25 μm wavelength), with an emissivity value of 0.03-0.1. This enables efficient heat transfer with minimal energy loss, making ACTP particularly effective for applications requiring precise thermal management. The material maintains structural integrity within a temperature range of -40°C to 220°C, with a maximum peak temperature tolerance of 250°C for short durations.Mechanical PropertiesACTP demonstrates excellent mechanical characteristics, including a Young's modulus of 3-5 GPa and a tear resistance of 400-600 mN (Elmendorf method). The base paper typically has a grammage of 60-120 g/m², with surface smoothness measuring 100-300 Bekk seconds. These properties ensure reliable performance during high-speed transfer processes while p

Heat Sealed Paper Bag Waterproof: Characteristics, Applications, and MaintenanceWhat is a Heat Sealed Paper Bag Waterproof?A Heat Sealed Paper Bag Waterproof is a specialized packaging solution that combines the eco-friendliness of paper with the durability of waterproof materials. These bags are manufactured using high-quality kraft paper laminated with polyethylene (PE) or polypropylene (PP) coatings, then heat-sealed to create a moisture-resistant barrier. The heat sealing process ensures airtight closure, preventing water ingress while maintaining the bag's structural integrity.Key Technical Specifications:Water Resistance: Withstands water pressure up to 5,000 Pa (ASTM D779 test standard)Material Thickness: Typically ranges from 120-300 GSM (grams per square meter)Seal Strength: 3.5-5.0 N/15mm (measured per ASTM F88 seal strength test)Temperature Resistance: -20°C to 80°C operational rangeMoisture Vapor Transmission Rate (MVTR): <5 g/m²/24h (at 38°C, 90% RH)Applications of Heat Sealed Waterproof Paper BagsThese versatile bags serve numerous industries due to their unique combination of sustainability and protection:1. Food PackagingIn the food industry, heat sealed waterproof paper bags maintain product freshness while meeting food safety standards. They are particularly valuable for:Dry Goods: Coffee beans (moisture content maintained below 5%)Baked Goods: Extends shelf life by 30-40% compared to standard packagingFrozen Foods: Withstand freezer temperatures dow

Paper Plate Food Greaseproof Paper Coating: Comprehensive Technical Overview1. Definition and CompositionPaper plate food greaseproof paper coating refers to specialized barrier coatings applied to paper substrates to create oil- and grease-resistant food service products. These coatings typically consist of fluorochemicals, silicone polymers, or bio-based alternatives like PLA (polylactic acid) and starch derivatives. The most common fluoropolymer used is perfluorooctanoic acid (PFOA)-free PFAS with a molecular weight range of 500-1000 g/mol, providing optimal surface energy reduction to 10-15 dynes/cm.The coating thickness typically ranges from 2-5 microns per side, with application weights of 1.5-3.5 g/m². Advanced formulations achieve grease resistance levels exceeding Kit Number 12 (TAPPI T559 standard) while maintaining repulpability rates above 85% in standard recycling processes.2. Key Technical Characteristics2.1 Barrier PerformanceThe coatings demonstrate exceptional resistance to:Grease penetration: >24 hours at 40°C (ASTM F119-82)Oil holdout: >180 minutes for castor oil (TAPPI T454)Water vapor transmission rate (WVTR): 5-15 g/m²/day at 38°C/90% RH2.2 Thermal PropertiesModern coatings withstand:Continuous use temperatures up to 120°CShort-term exposure to 200°C for 30 secondsGlass transition temperatures (Tg) between 45-75°C (DSC analysis)2.3 Mechanical PropertiesTensile strength: 35-50 MPa (MD direction)Elongation at break: 4-8%Bending stiffness: 3-7 mN·m

Food Safe Biodegradable Paper is an environmentally friendly packaging material designed specifically for food contact scenarios, using natural plant fibers (such as wood pulp, bamboo pulp, or agricultural waste) as the substrate, combined with bio based coatings or processes without chemical additives. Its core advantage lies in its compliance with food safety standards (such as FDA, GB 4806, etc.), as well as its biodegradability, compostability, or recyclability. It is widely used in food packaging, catering services, and retail fields, and is a green alternative to traditional plastics and non biodegradable paper.characteristicNatural plant fiber substrateRaw material source: Mainly renewable resources (such as FSC certified fast-growing forest pulp, bamboo pulp, or sugarcane bagasse) to reduce the consumption of forest resources.Data support: Renewable fibers account for over 95% of the substrate, and the carbon emissions during the production process are reduced by 60% -80% compared to traditional plastic packaging. For example, the carbon emissions from producing 1 ton of food grade biodegradable paper are approximately 0.8 tons of CO ₂ equivalent, while traditional plastic packaging is 3.2 tons.Non toxic coatings and additivesSafety standards: The coating uses water-based acrylic acid, chitosan, starch based polymers and other bio based materials, without adding fluorinated compounds (such as PFOA, PFOS), phthalates or heavy metals.Data support: Certified by FDA 21 C

Eco friendly Greaseproof Paper is a biodegradable packaging material made from natural plant fibers such as wood pulp, bamboo pulp, or sugarcane bagasse, using fluorine free chemical coatings or biobased barrier technology. Its core function is to prevent oil penetration, while possessing environmental protection, safety, sustainability and other characteristics. It is widely used in food packaging, baking, fast food and takeaway industries, and has become a green substitute for traditional plastic coated paper and aluminum foil paper.characteristicNatural plant fiber substrateRaw material source: Using renewable resources (such as FSC certified wood pulp, bamboo pulp, or agricultural waste sugarcane bagasse) as substrates to reduce dependence on petroleum based materials.Data support: Renewable fibers account for over 90% of the raw materials, and the carbon emissions during production are reduced by 40% -60% compared to traditional plastic coated paper. For example, the carbon emissions from producing 1 ton of environmentally friendly oil resistant paper are about 1.2 tons of CO ₂ equivalent, while traditional plastic coated paper is 2.5 tons.Fluorine free chemical coating technologyEnvironmentally friendly coating: using water-based acrylic acid, silicone oil or bio based polymers (such as chitosan, starch derivatives) instead of fluorinated compounds (such as PFOA, PFOS) to prevent toxic substances from migrating to food.Data support: The fluorine content in the coating