32results about How to "Fine crease" patented technology

The invention provides a polyurethane resin. The raw materials for preparing the polyurethane resin mainly consist of the following components in parts by weight: polyol: 150-200 parts; chain extender: 10-45 parts; isocyanate: 100-150 parts; Oxygen agent: 0.1-10 parts; Reaction terminator: 0.1-1 part; Solvent: 500-800 parts; Reactivity modifier; The content of each component of the polyol: polytetrahydrofuran ether glycol: 40- 70%; Polyester polyol: 0-45%; Polycarbonate diol: 0-15%; Polycaprolactone diol: 0-25%; Modified dimethicone diol : 5-10%. The invention also provides the preparation method and application of the resin. The polyurethane resin prepared by the invention can form small and uniform cells when processing the superfine fiber synthetic leather, so that the produced superfiber can have finer creases and full fleshy feeling.

The invention relates to high resilience wet urethane resin for superfine fiber synthetic leather, which is mainly composed of polyether or polyester polyol, chain extenders and diisocyanate, and the mol ratio of the components is 1 of the polyester polyol, 1.5 to 3 of the chain extenders and 2.5 to 4 of diisocyanate. The high resilience wet urethane resin has the advantages that base cloth impregnated by the urethane resin has good resilience, strong real leather feeling, subtle lines of the base cloth after being reduced in weight, split, expanded, enlarged in size, dried, oiled and kneaded, the lines of the shoes made of shoe synthetic leather (especially for sports shoes and casual shoes) prepared by the base cloth, which are generated during wearing, can automatically restore due to the good resilience, the gauffer of the shoe upper is small, therefore the shoes can have good shape, and the quality is lifted to a higher level.

Provided is a flexible electromagnetic wave shielding material. An electromagnetic wave shielding material according to an embodiment of the present invention is implemented to include a conductive fiber web including a conductive composite fiber including a metal shell part covering an outside of a fiber part such that the conductive composite fiber forms multiple pores; and a first conductive component provided in at least some of the pores. The electromagnetic wave shielding material is so excellent in flexibility, elasticity, and creasing / recovery that the electromagnetic wave shielding material may be freely changed in shape, and can be brought in complete contact with a surface where the electromagnetic wave shielding material is intended to be disposed even if the surface has a curved shape such as an uneven portion or a stepped portion, thus exhibiting excellent electromagnetic wave shielding performance. Also, it is possible to prevent deterioration of the electromagnetic wave shielding performance even with various shape changes. Furthermore, even if parts are provided in a narrow area at a high density, the electromagnetic wave shielding material can be brought into complete contact with the mounted parts by overcoming a tight space between the parts and a stepped portion. Thus, the present invention can be easily employed for a light, thin, short, and small or flexible electronic device.

The invention relates to a supersoft protein wet-process resin, which consists of 5%-10% of polyester / polyether polyol, 0.3%-0.7% of double-terminated hydroxyl polyether modified silicone oil, 0.3%-1% of ethylene glycol, diphenyl Methyl methane-4,4-diisocyanate 2%~5%, polyvinyl alcohol powder 15%~20%, polyamide wax 0.15%~0.25%, N,N-dimethylformamide 68%~73% made. The invention also discloses a preparation method of the ultra-soft protein wet-process resin. The wet-process synthetic leather bass made of the polyurethane polyvinyl alcohol blended wet-process resin synthesized by the above formula and process has a strong sponge feel, a honeycomb-like cell structure similar to leather protein fibers, fine creases, and a texture similar to leather protein fibers. The softness, comfort, nature and warmth of the fiber.

The invention discloses imitation sheepskin ultrafine fiber polyurethane synthetic leather and a manufacturing method thereof. The manufacturing method comprises the following steps: (1) applying oil to raw base cloth A and drying to obtain base cloth B; (2) bonding a sizing agent of surface layer dry-method polyurethane resin to the base cloth B obtained in the step (2) through a polyurethane bonder by a release paper dry-method film-shifting and surface-making technology, and stripping release paper to obtain the imitation sheepskin ultrafine fiber polyurethane synthetic leather. According to the method, the moderately soft base cloth is selected, the base cloth subjected to oil application is high in softness and leather feel, and the surface-overlaid ultrafine fiber polyurethane synthetic leather obtained through a dry-method surface-making process is good in fold lines and smooth feel. The imitation sheepskin ultrafine fiber polyurethane synthetic leather provided by the invention is exquisite in fold lines and smooth in hand feel, has a very good genuine leather feel and successfully solves the problem that exquisite fold lines and high softness of conventional imitation genuine leather ultrafine fiber synthetic leather cannot be compatible.

The invention belongs to the technical field of preparation of ultrafine fiber synthetic leather, and in particular relates to a preparation method of ultrafine fiber sofa leather bass, comprising the following processing steps: spinning, non-woven fabric, non-woven fabric shaping, wet impregnation, extraction, and drying Oiling, kneading and finishing. The preparation method of the present invention adopts novel polyurethane to wet impregnate the microfiber non-woven fabric, and is equipped with a reasonable superfiber production process, so that the microfiber bass prepared by the present invention has the characteristics of plump flesh and relatively delicate creases, and can be Improve the grade of microfiber sofa leather, comparable to calfskin and goatskin, greatly reduce the consumption of raw materials, increase the recycling value of waste polyethylene, and improve product quality, and the economy is relatively high.

The invention discloses an ultra-low thermal shrinkage polyurethane microfiber base cloth and a preparation method thereof. The preparation method of the ultra-low thermal shrinkage polyurethane ultrafine fiber base cloth comprises the following steps: making nylon 6 or polyester, polyethylene or styrene into The non-woven fabric formed by sea-island short fiber is impregnated in wet slurry, then coagulated and washed with water, and then the polyethylene or styrene is decremented in hot toluene to obtain a wet cloth, and then the wet cloth is impregnated Continuous kneading and drying in the oiling solution can obtain the ultra-low heat shrinkage polyurethane microfiber base cloth; the oiling solution contains amino silicone oil, isomerized decanol polyoxyethylene ether, isomerized decanol polyoxyethylene ether, isomerized decanol Triol ethoxylates, diethylene glycol monobutyl ether and water. The invention has an ultra-low thermal shrinkage rate, the thermal shrinkage value of the finished base fabric is 0.1-1.5%, and the features of fine creases can meet the requirements of high-temperature use and high-temperature dry veneering.

The invention relates to a production method of high-physical superfiber fleece-feeling sheep-grain synthetic leather. The method produces superfiber small Sheep pattern synthetic leather has the characteristics of strong leather feeling, good velvet effect, fine creases, strong transparency and low cost.