Processing Aid Systems for Material Optimization

Packaging film with improved gas barrier properties and reduced polymer degradation when recycled. The film has a gas barrier layer, an adhesive layer, and a sealant layer. The gas barrier layer has a soft coating layer between the vapor deposition layer and adhesive. The coating layer's hardness is 1.15 GPa or less. The adhesive layer is made by bonding a polyolefin adhesive composition to the gas barrier layer via melt extrusion. The sealant layer contains polyolefin resin. This film design allows good gas barrier performance without decreasing the polyolefin content in the film. The coating layer softness relaxes deposition layer stresses to prevent cracking. The soft adhesive layer allows shrinkage without transmitting stresses. This preserves barrier integrity during processing. The soft coating and adhesive layers prevent polymer

Source

A sachet packaging machine that improves accuracy, reduces waste, and prevents material overheating compared to existing machines. The machine has a design that enables more efficient temperature control during critical steps of the sachet filling process. This prevents burns, deformation, and other issues that can occur when the material is exposed to overheating. The machine uses features like cooling systems, controlled roller speeds, and optimized sealing zones to prevent material damage and improve product quality.

Source

A PVDC (polyvinylidene chloride) emulsion for pharmaceutical packaging that provides improved barrier properties, thermal stability, and long-term stability compared to conventional PVDC emulsions. The emulsion is made by using a silica sol as the dispersant instead of traditional surfactants. This avoids issues like decomposition, hydrolysis, migrant formation, crystallization, and poor thermal stability when heating. The silica sol also improves the water vapor barrier performance of the coating. The PVDC emulsion formulation contains 35-50% vinylidene chloride monomer, 0.5-5% comonomer, 0.1-0.5% initiator, 0.01-0.1% stabilizer, 5-7% silane coupling agent modified silica sol, and 30-5

Source

Coating agent for vapor deposited films that provides gas barrier properties and adhesion even after retorting. The coating agent contains a urethane resin made from a polyester, a diisocyanate, and an active hydrogen compound like a polyol. The polyester contains aromatic dicarboxylic acids and a polyol with 2-6 carbon atoms. This composition provides good gas barrier and adhesion after heat treatment compared to coatings without these components.

Source

Reducing air bubble formation in laminated films used for packaging containers like pouches and lids. The method involves coating one film with a solventless adhesive using a specialized roll coating device. The coated film is then laminated with the other film while sandwiched between them. The coating device has a configuration with rolls and transfer rolls to precisely apply the adhesive. The adhesive has specific viscosity and components like a polyester resin and aliphatic isocyanate curing agent. This allows controlled adhesive layering and bonding to reduce air trapped between films and prevent orange peel appearance in the laminated film.

Source

Two-component curing adhesive composition for laminating films and packaging materials that is safer, recyclable, and biodegradable compared to traditional reactive adhesives. The adhesive uses an oil or fat containing an acid anhydride group as the adhesive component and a curing agent containing an acid-modified polyol and an amine compound. The acid anhydride groups in the oil react with the hydroxyl groups in the polyol to cure the adhesive. The curing agent amine catalyzes the reaction and improves curing speed. The oil component allows recyclability and biodegradability compared to traditional reactive adhesives.

Source

High-processability, high-temperature sterilization paint for the exterior of bottle cans that replaces the traditional 2-coat system with a simplified 1-coat overvarnish. The 1-coat composition contains specific resins to provide processability, adhesion, and sterilization properties similar to the 2-coat system. It uses a high molecular weight saturated polyester, a soft amino resin (like urea or blocked isocyanate) instead of melamine, and a low molecular weight epoxy resin. The composition replaces the size paint used for adhesion and processability, allowing a thinner coating with better flexibility and reduced damage during processing.

Source

Packaging material with reduced static electricity that can be manufactured using a gravure printing process. The material has an antistatic coating layer formed on a multilayer film using an antistatic treatment solution mixed with ethanol. The coating is applied by gravure printing and then dried. The antistatic coating contains polyurethane resin, conductive polymer, surfactant, crosslinker, and fluororesin. Ethanol improves coating properties, speed, and safety. The antistatic coating reduces friction static electricity to prevent contents from sticking to the packaging.

Source

Multi-layer film packaging with improved heat-sealing properties and reduced foreign material formation during manufacturing. The packaging uses a multi-layer film with a surface sealing layer made of linear low density polyethylene (LLDPE). The sealing layer contains PTFE polyethylene with a specific molecular weight distribution (Mw/Mn) of 3 to 7. This PTFE-LLDPE sealing layer prevents delamination and adhesion during heat sealing while inhibiting foreign material buildup on the die.

Source

Embossed printing ink for security documents and packaging that dries quickly, prevents ink leakage, allows precise embossment, and prevents ink transfer to the back of printed pages. The ink composition includes a compound curable with UV light, an oxidatively polymerizable compound, a photopolymerization initiator, an oxidative polymerization catalyst, and pigment. This ink formulation enables faster drying, prevents softness that reduces embossment, and prevents ink transfer between printed pages when stacked.

Source

Multilayer film with excellent gas barrier properties, appearance, and recyclability, particularly for wide width films like 500 mm. The film has an outermost layer made of a specific resin composition containing EVOH with 20-50 mol% ethylene content and 90 mol% saponification, and 350-2000 ppm of polyvalent metal ions like Mg, Ca, Zn, Co, Mn. This improves slipperiness between surfaces during extrusion to reduce defects. The film also has inner layers of adhesive and polyolefin resins. The composition allows wide width films with good appearance, gas barrier, and recyclability.

Source

Base paper for metallized paper that provides metallized paper with excellent printability and processability in automatic packaging. The base paper has a resin layer on one side and a pigment coating layer on the other side. The pigment content in the coating is 50-85% by mass. The side with the pigment coating has an Oken smoothness of 300 seconds or more and a dynamic friction coefficient against stainless steel of 0.35 or less. This improves printability and reduces friction when metallizing the paper. The coating layer properties remain after metallization.

Source

Biodegradable adhesive composition for packaging bags that has low melt viscosity for partial coating, biodegradability, and thermal stability. The adhesive contains a biodegradable thermoplastic polymer (A), a tackifier resin (B), and a wax (C) in specific proportions. The composition has 50-70 parts A, 20-50 parts B, and 0.01-10 parts C per 100 parts total. The adhesive has a melt viscosity at 180°C of 50,000 mPa·s or less. This allows partial coating and prevents blocking. The adhesive can be used in packaging bags made of biodegradable materials.

Source

Dry food packaging laminate and bag with improved impact resistance, heat sealability, and bag-making processability. The laminate has a base layer made of a biaxially oriented polypropylene film with high elastic modulus (500 MPa or more at 100°C) to prevent bag deformation during filling. The heat seal layer is mainly polypropylene with an ethylene-α-olefin copolymer having a melting point of 125-145°C and a 973cm-1 peak intensity divided by 973cm-1 peak intensity of 0.1-0.3. This balance of properties provides good impact resistance, low-temperature heat sealability, and bag-making processability for recyclable, environmentally friendly food packaging.

Source

Stretch blow-molded articles like toner bottles that prevent degradation of the contained toner powder and prevent wax transfer to the bottle surface when made from recycled PET. The molded articles contain a polyester, wax, and an inorganic layered double hydroxide or zeolite. The wax is adsorbed by the inorganic compound instead of transferring to the bottle surface, preventing chemical attack on the toner particles inside. This prevents deformation of toner particle surfaces when stored in the bottle. By using recycled PET, it reduces environmental impact compared to virgin PET.

Source

Sheet for press-through packaging, like for medicine blisters, with improved properties for environmental friendliness and manufacturing ease. The sheet contains vinyl chloride resin, biomass resin, and a plasticizer. It has a specific storage modulus range of 1-2.6 GPa at 30°C. The biomass resin is a butylene succinate like polybutylene succinate. The plasticizer is epoxidized vegetable oil like epoxidized soybean oil. The vinyl chloride resin has low chlorine content. This composition allows manufacturing press-through packages with biomass content over 10% and reduced bleeding of plasticizers during production.

Source

Resin composition for improving thermal stability of EVOH copolymer containing ethylene-vinyl alcohol copolymer (EVOH), a polypropylene resin with 14 carbon atoms, and an alkali metal compound. The composition allows producing EVOH-based materials with better thermal stability compared to EVOH alone. The composition can be used to make molded articles, sheets, films, bottles, tubes, containers, and multilayer structures with improved heat resistance. The EVOH:polypropylene-14C ratio is 10:90 to 99:1, the EVOH content is 10-99%, the polypropylene-14C content is 1-90%, and the alkali metal compound is 1-10,000 ppm.

Source

Resin composition for packaging applications that has improved thermal stability compared to existing compositions containing ethylene-vinyl alcohol copolymer (EVOH) and polypropylene. The composition contains EVOH and a polypropylene resin containing carbon 14. The carbon 14 polypropylene provides better thermal stability compared to conventional polypropylene resins. The composition can be used in molded articles, sheets, films, bottles, tubes, containers, and multilayer structures with improved thermal properties.

Source

Polyhydroxyalkanoic acid (PHA) film with improved properties for packaging and agricultural applications. The film has a melt resistivity of 3 MΩ cm or more and 400 MΩ cm or less at 180°C, and a weight retention rate of 97% or more after holding at a temperature 30°C higher than the melting point for 30 minutes. This balances melt processability and film integrity. The film can also have other properties like low melting point, high elongation, and good thermal stability.

Source

Stand-up pouch with improved strength, recyclability and sealing properties. The pouch has a unique laminated film composition that allows high heat sealing speeds without shrinkage or damage. The film layers are an outer nylon-containing stretched layer, an intermediate biaxially oriented PE layer, and an inner unstretched PE layer. The pouch also has a high polyethylene content (85% or more) and low nylon and PET contents (10% or less each) to balance strength and recyclability.

Source