46results about "Release paper" patented technology

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.

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 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 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 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.

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.

The present application relates to a polymer film (FILM 1) for a release liner (REL1), comprising a polymer support layer (S1) of a first composition comprising one or more polyolefins and / or polyesters, and an extruded primer layer (PRIM1) of a second composition comprising a thermoplastic polymer covalently bound to functional vinyl groups.

The invention relates to a transfer product carrier (1), a transfer product (10), and a method for producing a transfer product carrier (1). The transfer product carrier (1) comprises a paper layer (2) and at least one coating (3) consisting of a cured water glass lacquer.

The invention relates to the technical field of glassine paper production, in particular to glassine paper production equipment and a production method thereof.The glassine paper production equipment comprises a fixing frame, and a first guide roller, two second guide rollers and two third guide rollers are rotationally installed on the fixing frame. Through matching of the collecting box and the scraping assembly, redundant silicone oil or impurities on the guide roller and the oiling assembly can be cleaned in time, the situation that residual materials affect the product quality is avoided, the redundant silicone oil can be recycled through the collecting box, and raw material waste is reduced; the feeding mechanism can stably and continuously supplement silicone oil for the silicone oil box of the oiling assembly, production interruption caused by supply interruption of the silicone oil is completely eradicated, and production continuity is guaranteed. The drying mechanism can quickly dry backing paper coated with silicone oil, the production period is shortened, and the production efficiency is improved; the air adjusting assembly can flexibly adjust the air outlet direction of the drying mechanism, it is guaranteed that hot air evenly acts on the backing paper, insufficient or excessive local drying is avoided, and the drying quality of the glassine paper is further guaranteed.

The invention relates to a PU vamp treatment process and production equipment, and belongs to the technical field of PU leather coating, in the PU vamp treatment process, aiming at the coating operation between a PU surface layer and a base material layer, coating rubber blocks distributed at intervals are formed between different surface layers, the amount of coating rubber can be saved, and the production efficiency is improved. In order to adapt to coating rubber blocks distributed at intervals in the production equipment, a coating roller set comprises an inner driving roller set and an outer coating roller set, the outer coating roller set is formed by tightly attaching a plurality of outer coating plate set units, and the side face of each outer coating plate set unit comprises a plurality of coating grooves formed at intervals. By controlling the relative rotation angle between the outer coating plate set units, the coating grooves of all the outer coating plate set units can be arranged in a staggered mode, and compared with an existing structure of a plurality of annular groove coating rollers arranged at intervals, the phenomenon that when cloth is tightly attached to the coating rollers, the coating efficiency is reduced can be reduced. And due to the existence of the annular groove, the fabric is bent.

The invention relates to the technical field of release paper, in particular to release paper with a composite multilayer structure, which comprises a base material paper layer, a first bonding layer arranged at the top of the base material paper layer, a first surface functional layer arranged at the top of the first bonding layer, and a second bonding layer arranged at the bottom of the base material paper layer, and a second surface functional layer is arranged at the bottom of the second bonding layer. According to the release paper with the composite multi-layer structure and the manufacturing process of the release paper, the base material paper layer is impregnated and modified to form the microscopic expansion holes, and the interlayer physical occlusion and binding force are strengthened in cooperation with the negative pressure adsorption spraying film; a PMP-PA66 composite system is subjected to high-temperature lamination to form a compact barrier structure, water vapor and oxygen permeation is effectively blocked, a temperature-sensitive microcapsule containing a PMMA wall material and a stripping regulator core material is utilized to realize adaptive intelligent regulation of stripping force temperature, and meanwhile, the bonding resin is grafted and modified to form a bonding enhanced structure, so that the stripping strength is improved. And the interlayer bonding stability and the environment-resistant characteristic are improved.

The invention relates to a method for manufacturing thermoplastic poly(vinyl alcohol) derivative in a melt state reaction and a product thereof, wherein the method thermoplastic poly(vinyl alcohol) that has been dried is heated and admixed with an organic acid anhydride that has a catenated carbon structure which ends into a vinyl group, such that a mixture is obtained which is above the melting point of the mixture, thereby causing an ester bond forming condensation reaction in a melt state, wherein at least some of the organic acid anhydride reacts with hydroxyl groups of the thermoplastic poly(vinyl alcohol), such that reaction product is formed which contains carboxylic acid residue and thermoplastic poly(vinyl alcohol) derivative which contains ester bonded pendant chains of which at least some end into vinyl groups. The invention further relates to a method for manufacturing a paper substrate and a product thereof, which contains a primer layer that contains the reaction product.

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

The invention discloses a release agent for coated paper as well as a preparation method and application of the release agent, and belongs to the technical field of release paper materials. The release agent is an addition type organic silicon system, vinyl-terminated polydimethylsiloxane is used as a base material, vinyl-containing polyolefin copolymer emulsion is introduced into a core to serve as an anchoring agent, and hydrogen-containing silicone oil, a platinum catalyst and other components are compounded. The preparation method comprises the steps of premixing, proportioning, catalytic mixing and filtering, the application follows a process of coating a film first and then coating silicon, and a finished product is obtained through film coating, coating, curing and curing. The release agent realizes chemical bonding with a lamination layer through an anchoring agent, the adhesive force reaches 0 level, the change rate of release force is less than + / -5%, silicon transfer is avoided, the die cutting performance is excellent, the release agent is adaptive to a PE / PP lamination layer, corona pretreatment is not needed, the process is environment-friendly, and the release agent is suitable for the fields of adhesive products, electronic materials and the like.

The invention relates to a method for producing glass paper having a basis weight of less than 50 g / m2, in which an optimal combination of BSKP, BHKP and BCTMP is used to adjust the properties of the fiber ingredients. In glass paper with very low basis weight, the formation of the paper web during paper manufacturing can be controlled by optimization of fiber ingredients, which can be used to produce very thin glass paper without reducing thickness and without adversely affecting other paper properties, which will prevent the glass paper from being used as a substrate layer in release interleaving paper. Therefore, glass paper with an appropriate proportion of BCTMP in the fiber composition can be produced, and the glass paper has the quality characteristics of paper which is sufficient to be used as a base material layer of industrial release lining paper.

The invention relates to the technical field of papermaking, and provides release paper for sanitary napkins and a printing method of the release paper. The release paper comprises: a base material; the printing layer is arranged on at least part of the surface of the base material, and the printing layer is formed by printing and curing body barrier type ink; the functional layer is arranged on at least part of the surface of the printing layer, and the functional layer comprises microcapsules encapsulated with active matters. The microcapsule is used for achieving the functions of resisting bacteria, removing odor and the like in the storage process of the sanitary napkin so as to maintain the cleanliness of the product; after the body barrier type ink is used for printing and is cured, the clearness and the wear resistance of images and texts are ensured, the barrier and interface matching effects between the microcapsule and a base material are achieved, and unexpected migration or failure of active matters in the printing, storage and transportation processes is avoided; therefore, while the printability and the appearance quality of the release paper are ensured, stable packaging of the active matter and function maintenance in the storage period are realized.

This organopolysiloxane composition for use in release paper or release film, said organopolysiloxane composition containing (A) an organopolysiloxane having two or more silicon atom-bonded alkenyl groups in each molecule, (B) an organohydrogen polysiloxane having two or more silicon atom-bonded hydrogen atoms (Si—H groups) on average in each molecule, (C) an organic peroxide and (D) a specific amount of a platinum group metal-based catalyst, is capable of undergoing an addition reaction with a smaller amount of the platinum group metal-based catalyst in comparison to the prior art, thereby being capable of forming a cured coating film which has a release strength equivalent to that of the prior art even in cases where a component that inhibits the catalytic activity of the platinum group metal-based catalyst is contained in the composition. In addition, this organopolysiloxane composition is capable of forming a cured coating film by means of an addition reaction even on a base material containing a catalyst poison component, on said base material conventional compositions being not able to be cured.

The present invention relates to a polymer-coated cellulose substrate (S2) for a release liner (REL1), comprising: a cellulose support layer (PAP1); a first coating layer (PO1) comprising a first composition comprising a polyolefin; and an extrusion primer layer (PRIM1) comprising a second composition comprising a thermoplastic polymer covalently bound to a functional vinyl group; wherein the first coating layer (PO1) is located between the cellulose support layer (PAP1) and the extrusion primer layer (PRIM1).