70results about "Release paper" patented technology

The present invention relates to a method for manufacturing a barrier layer for a paper or paperboard based packaging laminate. said method comprising: a) providing a barrier substrate comprising at least 50 wt % highly refined cellulose pulp (HRC) based on dry weight of the barrier substrate. said HRC having a Schopper-Riegler (SR) number above 80 as determined by standard ISO 5267-1, b) providing a transfer coating substrate comprising a vacuum coating layer and a backing layer separated by a release layer, and c) transferring the vacuum coating layer from the backing layer to the barrier substrate by a transfer coating process using an adhesive layer applied on the barrier substrate and / or the vacuum coating layer to obtain a barrier layer for a paper or paperboard based packaging laminate.

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 100 g / m2, wherein an optimal combination of nonrecycled BCP, BCTMP and recycled pulp obtained from release liner supercalendered Kraft paper is used to adjust the properties of the fiber furnish. While the use of BCTMP enables a product having a higher bulk, the recycled pulp component, which has high compatibility with the paper manufacturing process, enables to balance the manufacturing process and reduce the dimensional changes and shrinkage of the formed SCK paper. The combined presence of the BCTMP and the recycled pulp component in the fiber furnish improves the water removal from the fibers during the SCK paper manufacturing, while the presence of non-recycled BCP produced from softwood improves the formation and runnability of the paper web on the paper machine. This enables to produce SCK paper with improved sustainability, wherein the density may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner.

In a release paper consisting of a backing paper layer coated on at least one side with PVOH and a silicone coating on at least one side, in which the backing paper layer coated on at least one side with PVOH consists of bleached kraft paper, containing at least up to 30 wt. % softwood and hardwood with a total freeness between 30 °SR and 42 °SR, preferably between 33 °SR and 38 °SR, and processing aids, and also a release layer which is applied at least on one side to the PVOH-coated side of the backing paper layer and consists of 0.5 to 5 g / m2 of a silicone, and wherein the release paper coated at least on one side with PVOH and silicone has a density between 850 and 990 kg / m3, preferably between 900 and 970 kg / m3, and a method for producing a release paper.

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 70 g / m2, wherein an optimal combination of BSKP and BCTMP is used to adjust the properties of the fiber furnish. In SCK papers with low basis weight the bulk of the formed paper web upon paper manufacturing may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner. Thus SCK paper with exceptionally high share of BCTMP in the fiber furnish may be produced into the same thickness as was possible before for a conventional supercalendered kraft paper having a higher basis weight, while maintaining other quality characteristics of the paper sufficient for use as a substrate layer of an industrial release liner.

The invention relates to a method for manufacturing glassine paper having a basis weight of less than 50 g / m2, wherein an optimal combination of BSKP, BHKP and BCTMP is used to adjust the properties of the fiber furnish. In glassine papers with very low basis weight the formation of the paper web upon paper manufacturing may be controlled by means of the fiber furnish optimization, which can be used to produce exceptionally thin glassine paper without downgauging and without adverse effects to other paper properties, which would prevent the use of the glassine paper as substrate layer in a release liner. Thus glassine paper with a moderate share of BCTMP in the fiber furnish may be produced, that has quality characteristics of the paper sufficient for use as a substrate layer of an industrial release liner.

The invention provides branched vinyl silicone oil and a preparation method and application thereof.The branched vinyl silicone oil is obtained by taking a branched siloxane small molecule as a skeleton structure and then conducting chain extension reaction with a siloxane ring body, and the structure of the branched siloxane small molecule is shown as the following formula I: (CH3 (CH2) b (R22SiO) a (CH2) 2R22SiO1 / 2) n (R1R22SiO1 / 2) 4-nSiO2 (I), wherein R1 is vinyl, R2 is methyl, a is an integer ranging from 5 to 60, n is an integer smaller than or equal to 2, and b is 9, 11, 13, 15 or 17. The branched chain vinyl silicone oil provided by the invention is suitable for preparing a release agent and a release agent, can generate a better release effect, and has the advantages of low release force, silky hand feeling and the like.

The invention discloses environment-friendly release paper and a preparation method thereof, and relates to the technical field of release paper, the environment-friendly release paper specifically comprises a base material layer, a priming coat and a release layer, the base material layer is made of a recyclable material; the base material layer is made of renewable fibers, graphite powder and iron powder, the surface of the base material layer is coated with the bottom coating layer, the bottom coating layer comprises main components and auxiliary components, and the main components comprise but are not limited to water-based acrylic resin, polyvinyl alcohol, water-soluble polyurethane and modified cellulose ether; the auxiliary components comprise antistatic particles and water-absorbing fibers. Through the arrangement of the water-soluble priming coat, when the release paper is recycled, the base material layer and the release layer can be rapidly separated through the water solubility of the priming coat, recycling of the base material layer is facilitated, the water solubility speed of the priming coat can be increased through the water-absorbing fibers, and then the recycling speed of the release paper is increased.

The present invention relates to a glass paper for stripping interleaving paper, wherein the majority of the fiber ingredients are non-regenerated bleached chemical pulp from hardwood such as birch or eucalyptus. A small amount of recycled pulp produced from release liner glass paper and / or pulp mill broke is used to adjust the characteristics of the fiber ingredients. The invention makes it possible to produce cellophane, wherein the fibrous ingredients do not contain non-recycled chemical pulp produced from cork.

Silicone release coating emulsions can be dried and cured to form a silicone release coating on both paper and plastic substrates. The coated substrates can be used in a variety of end-use applications, including (opto)electronic device fabrication and food contact applications.

The present invention discloses an aqueous release coating, which comprises the following components by mass percentage: paraffin emulsion 30-40%, palm wax emulsion 30-40%, polyethylene wax emulsion 15-30%, release force regulator 1-3%, surfactant 1-3%, and aqueous polymer resin 1-3%. The present invention also discloses a preparation method of the aqueous release coating and its application in thermal transfer labels. The aqueous release coating disclosed by the present invention has no ink residue on the surface of the paper after release, and the aqueous release coating does not add organic solvents, has no VOC emissions, is environmentally friendly, has low cost, and the raw materials are friendly to the human body, and can be applied to the fields where human contact is possible.

The invention discloses temperature response type high-temperature-resistant release paper and a preparation method thereof. The release paper comprises a first release layer, a resin isolation layer, a base material layer, a resin punching layer, a temperature-sensitive layer and a second release layer which are sequentially stacked. The PNIPAAm temperature-sensitive layer is additionally arranged on the outer side of the perforated resin isolation layer, when the temperature-sensitive layer is lower than LCST (lowest critical compatibility temperature), molecular chains of the PNIPAAm temperature-sensitive layer are in a stretched state and are large in size, the perforated holes can be blocked, and water circulation can be prevented, when the temperature is higher than LCST, the molecular chains of PNIPAAm are in a contracted state and are small in size, and the perforated holes can be blocked by the PNIPAAm temperature-sensitive layer. Moisture can freely enter and exit through the exhaust holes, so that the use of the release paper is not influenced, and higher temperature can be resisted; the method can solve the problem that the water content of the paper is greatly changed due to the fact that the perforated release paper is influenced by external humidity.

The application discloses a kind of light and thin solvent-free silicone oil release paper manufacturing process, belong to release paper manufacturing technical field, package following steps: paper selection, primer, drying primer, spraying release agent, scanning and scraping release layer, flatten release layer, drying release layer, water recovery, release paper winding, select low, thin base paper of grammage, then lower coating dry weight is used to primer to base paper is carried out primer and drying is formed to form film layer to obtain intermediate paper, when spraying release agent, atomizer will release agent atomization into particle and be sprayed to the surface of film layer of intermediate paper, let release agent particle be evenly attached to the surface of film layer of intermediate paper, then through scraper and two flatten rollers destroy the surface tension of release agent particle, let all release agent particles be fused together, the particle size of release agent particle after atomization is smaller, can reduce the thickness of release layer, then release layer is dried, water recovery is obtained after getting light and thin release paper of low grammage, low thickness.

The present invention relates to a release liner base paper comprising at least 5 wt% of recycled fibers from recycled paperboard-based fibers, printing material-based fibers or both, and having a density of at least 1.00 g / cm3. Further aspects of the invention relate to a method for producing said release liner base paper, to the use of said release liner base paper in a method for producing a release liner, to a release liner comprising said release liner base paper and to a laminate comprising said release liner.

The present invention relates to the field of the adhesive tape industry, and more particularly, to a base paper for adhesive tapes and adhesive tapes for packaging and office / stationery use. According to one particular embodiment, the adhesive tape of the present invention may be based on transparent paper, one side of the paper being coated with a release agent and the other side being optionally coated with a primer coating. The present invention also relates to a method of producing the adhesive tape base paper and the adhesive tape, and their use as packaging or office / stationery tapes.

A repulpable release liner and a combined composition for preparing the same are disclosed. The combined composition comprises (A) a first formulation comprising a vinyl-functionalized polysiloxane, a non-vinyl polysiloxane, and a noble metal- siloxane complex catalyst; (B) a second formulation comprising at least one olefin copolymer and at least one olefin- (meth) acrylic copolymer. The first formulation is independent of the second formulation. The release liner prepared with the combined composition exhibits superior repulpability, rub resistance, coatability of release coating with desired release force and the like.

The invention relates to a polymer-coated cellulosic substrate (S2) for a release liner (REL1), comprising a cellulosic support layer (PAP1), a first coating layer (PO1), comprising a first composition containing polyolefin, and an extruded primer layer (PRIM1) comprising a second composition containing a thermoplastic polymer covalently bonded to functional vinyl groups: wherein the first coating layer (POI) is situated between the cellulosic support layer (PAP1) and the extruded primer layer (PRIM1).

A polyorganosiloxane emulsion has a discontinuous phase dispersed in a continuous phase, wherein the discontinuous phase includes a hydrosilylation reaction curable polyorganosiloxane composition, and the continuous phase comprises water. The emulsion is useful for forming a coated article in which a substrate has a polyorganosiloxane release coating on its surface. The coated article is useful for food contact applications.

The present invention relates to a method for manufacturing a barrier layer for a paper or paperboard based packaging laminate, said method comprising: a) providing a barrier substrate comprising at least 50 wt% highly refined cellulose pulp (HRC) based on dry weight of the barrier substrate, said HRC having a Schopper-Riegler (SR) number above 80 as determined by standard ISO 5267- 1, b) providing a transfer coating substrate comprising a vacuum coating layer and a backing layer separated by a release layer, and c) transferring the vacuum coating layer from the backing layer to the barrier substrate by a transfer coating process using an adhesive layer applied on the barrier substrate and / or the vacuum coating layer to obtain a barrier layer for a paper or paperboard based packaging laminate.

The present invention relates to the technical field of masking tape, and solves the technical deficiencies that the functional layer structure and its component ratio of existing products are unreasonable, the tape has poor UV resistance, and there is residual glue after long-term adhesion and removal. The technical solution includes a release layer, a masking paper substrate layer and an adhesive layer. An ultraviolet absorption coating is applied on the masking paper substrate layer to form an ultraviolet absorption layer, and an ultraviolet reflection coating is applied on the ultraviolet absorption layer to form an ultraviolet reflection layer; the ultraviolet absorption coating contains benzophenone and / or octyl dimethylaminobenzoate and / or resorcinol monobenzoate; the ultraviolet reflection coating contains nano-titanium dioxide and / or zinc oxide. The beneficial effects of the present invention are as follows: The hierarchical design and component ratio of the anti-UV functional layer structure are optimized. After most of the ultraviolet rays are reflected by the ultraviolet reflection layer, the remaining ultraviolet rays are completely absorbed by the ultraviolet absorption layer, blocking the damage of ultraviolet rays to the adhesive layer, reducing the coating dosage, having a better anti-UV effect, and there will be no residual glue after the tape is removed.

A repulpable release liner and a composite composition for preparing the same are disclosed. The composite composition includes (A) a first formulation containing a vinyl-functionalized polysiloxane, a non-vinyl polysiloxane, and a noble metal-siloxane complex catalyst, and (B) a second formulation containing at least one olefin copolymer and at least one olefin-(meth)acrylic copolymer. The first formulation is independent of the second formulation. The release liner prepared using the composite composition exhibits excellent repulpability, abrasion resistance, coatability of a release coating having a desired release force, and the like.

The present invention is an addition-curable releasing silicone composition for a silicone adhesive, the composition including: (A) a fluorine-containing organopolysiloxane having at least two alkenyl groups, at least one fluorine-containing substituent, and at least one aryl group and / or aralkyl group, wherein a fluorine content is 25 to 50 mass%, a proportion of a total number of the aryl group and the aralkyl group relative to a total number of a monovalent substituent is 0.1 to 20 mol%, and in molecular-weight distribution measurement, an area of a component having a molecular weight of 4,000 or less accounts for 2 to 20% of a total peak area; (B) an organohydrogenpolysiloxane having at least three SiH groups; (C) a platinum-group metal catalyst; and (D) a non-fluorine solvent. This provides a silicone composition for a releasing agent that can be diluted with a non-fluorine solvent, that has high coatability and adhesiveness on a film substrate, and that yields a cured coating having a small releasing force when evaluated by a transferring method, and small decrease in a residual adhesion force.

The present invention relates to a backing layer comprising a barrier coating comprising an inorganic filler and a polymer having a glass transition temperature of-35 DEG C to + 15 DEG C.

According to one aspect of the invention there is provided an ovenable molded multi-layer fibrous product comprising a first fibrous layer comprising a cellulosic fibrous material and a second fibrous layer on top of the first fibrous layer, the second fibrous layer comprising a cellulosic fibrous material, and the first and / or second fibrous layer exhibit barrier properties throughout substantially their structure, said product being configured to heat food or liquid thereon.

The curable organopolysiloxane composition can perform an addition reaction with a small amount of a platinum group metal catalyst and has curability equivalent to that of conventional organopolysiloxane compositions, and is particularly used as release paper and a release film. Provided are: a curable organopolysiloxane composition which is capable of forming a cured coating film having a peel strength equivalent to that of conventional organopolysiloxane compositions, and which is also cured by an addition reaction on a base material containing a catalyst toxin component; the present invention relates to an organopolysiloxane composition containing (A) an organopolysiloxane having two or more alkenyl groups bonded to a silicon atom in one molecule and not having three or more (meth) acryloyl groups in one molecule; (B) an organohydrogenpolysiloxane having an average of two or more hydrogen atoms bonded to a silicon atom in one molecule and not having three or more (meth) acryloyl groups; (C) a compound having a molecular weight of 72-1000, excluding an organopolysiloxane, among compounds having one or more (meth) acryloyl groups in one molecule; and (D) a platinum group metal catalyst.

A coated paper liner serves as both exterior packaging and an interior release liner for consumer products. The liner comprises a paper sheet layer with a first polymeric composition, such as a thermoplastic elastomer or polymer, forming a film on at least a portion of a surface of the paper sheet. The liner may also comprise a flexibility agent that enhances pliability and noise reduction during handling. The liner may include a release agent, like silicone, to prevent adhesion of consumer products to the liner. The method of manufacturing involves coating the paper sheet with the polymeric composition and flexibility agent, followed by drying. This solution offers a sustainable alternative to plastic films, providing to the liner heat-sealability, barrier properties, and recyclability.

The present invention relates to a transfer film for applying a barrier layer onto a substrate. The transfer film comprises a carrier film, on which a layer sequence is applied consisting of at least one lacquer layer, made of a barrier lacquer, and an inorganic layer, wherein the adhesive forces between the lacquer layer and the carrier film are lower than the adhesive forces between the lacquer layer and the inorganic layer. The transfer film is characterized in that the barrier lacquer comprises a polymer matrix having a hydrophilic component and a hydrophobic component, of which the hydrophilic component significantly outweighs the hydrophobic component. The transfer film allows a barrier layer having effective barrier properties to be transferred onto target substrates, for which this was previously technically impossible or economically impractical.

A packaging film (1) based on cellulose for packaging food as a twist pack, wherein said packaging film (1) has a base layer (2) which extends in a longitudinal direction (L), a width direction (B) perpendicular to the longitudinal direction (L), and a thickness direction (D) perpendicular to the longitudinal direction (L) and the width direction (B), and wherein the base layer has a first surface (2a) which extends in the longitudinal direction (L) and in the width direction (B), and a second surface (2b) which extends in the longitudinal direction (L) and in the width direction (B) and which lies opposite the first surface (2a), and wherein the base layer (2) is produced from paper and / or cellulose-containing material, characterized in that the base layer (2) has a structure and / or embossing at least in sections in such a manner that a first section (22) of the base layer (2) is rotatable by at least 180° with respect to at least one axis of rotation in relation to a second section (24) of the base layer in order thus to form the twist pack - in particular without tearing.

The invention relates to a method, system and a product thereof, wherein glassine or supercalendered kraft (SCK) paper, which has been used as a release liner substrate, is recycled into a high-quality pulp. When highly specific raw material is used for recycling, the characteristics of the recycled pulp may be adjusted already upon recycling. The method and the system is configured to adjust the fibrillation of the pulp such that the recycled pulp can be used without further refining for manufacturing new glassine or SCK paper. The compatibility of the recycled pulp may further be optimized for glassine or SCK paper production, respectively. Advantageously, the recyclable material is sorted based on the paper colour, prior to recycling. A recycled pulp may be provided which does not need to be bleached during the pulp recycling, prior to introducing it into a new glassine or SCK paper production.

A coated paper liner serves as both exterior packaging and an interior release liner for consumer products. The liner comprises a paper sheet layer with a first polymeric composition, such as a thermoplastic elastomer or polymer, forming a film on at least a portion of a surface of the paper sheet. The liner may comprise a flexibility agent that enhances pliability and noise reduction during handling. The liner may also include a release agent, such as silicone, to prevent adhesion of consumer products to the liner. The method of manufacturing involves coating the paper sheet with the polymeric composition and flexibility agent, followed by drying. This solution offers a sustainable alternative to plastic films, providing to the liner heat-sealability, barrier properties, and recyclability.

The invention relates to a method for manufacturing calendered glassine paper having a basis weight in the range of 40 to 120 g / m2, wherein an optimal combination of non-recycled BCP, BCTMP and recycled pulp obtained from release liner glassine paper is used to adjust the properties of the fiber furnish. While the use of BCTMP enables a product having a higher bulk, the recycled pulp component, which has high compatibility with the paper manufacturing process, enables to balance the manufacturing process and reduce the dimensional changes and shrinkage of the formed paper. The combined presence of the BCTMP and the recycled pulp component in the fiber furnish improves the water removal from the fibers during the glassine paper manufacturing, while the presence of non-recycled BCP produced from softwood improves the formation and runnability of the paper web on the paper machine. This enables to produce calendered glassine paper with improved sustainability, wherein the density may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the calendered glassine paper as substrate layer in a release liner.