5 results about "Crêpe paper" patented technology

This invention discloses an ultra-thin, highly water-resistant, biodegradable crepe paper mulch film and its preparation method, aiming to replace traditional plastic mulch film, solve the problem of agricultural mulch film pollution, and promote the development of organic agriculture. This paper mulch film consists of layers of topcoat and core pulp. The topcoat is mainly composed of corn starch, silicone water-resistant agent, and water (by weight, 5-10 parts, 2-6 parts, and 84-93 parts, respectively). The silicone water-resistant agent contains carboxyl groups, alcohol hydroxyl groups, and polysiloxane oxygen-containing functional groups, possessing both excellent water resistance and environmental friendliness. The basis weight of the topcoat is 2-3 g / m². The core pulp is made from 100% unbleached recycled fiber, with a basis weight of 30-38 g / m². The paper mulch film has a wrinkling rate of 10-20%. The paper mulch film has excellent technical indicators: thickness 1.5-2.5 mm / 16 ply, longitudinal elongation 6-15%, longitudinal tensile strength 12000-20000 mN, longitudinal wet strength 4000-8000 mN, water absorption 20-35 g / m² (3 layers for 60 seconds), and visible light transmittance 0.3-1.5%. Its low cost, combined with high water resistance, good elasticity and biodegradability, makes it an ideal upgrade solution for the agricultural mulch film industry.

The system (1) for the manufacture of layered shaped bodies, comprising: at least one base layer (9); at least one coating layer (8a, 8b); movement means (23) configured to move the at least one base layer (9) and the at least one coating layer (8a, 8b), substantially facing overlapping and parallel to each other, along a line of movement (M); pressing means (2, 3) provided with at least a first pressing body (2), comprising at least a first shaping element (4), and with at least a second pressing body (3), comprising at least a second shaping element (5) having a complementary conformation with respect to the first shaping element (4), the pressing bodies (2, 3) being arranged on opposite sides of the line of movement (M) and being movable, at least one with respect to the other, between: at least one home configuration, wherein the at least one first shaping element (4) and the at least one second shaping element (5) are spaced apart from each other; and at least one work configuration, wherein the at least one first shaping element (4) and the at least one second shaping element (5) are pressed under pressure, enclosing the layers (8a, 8b, 9) with each other and coupling them, so as to make, at a shaping area (10), at least one layered shaped body (11); wherein: the base layer (9) is made of paper; the coating layer (8a, 8b) is made of paper of the crepe paper type.

This invention relates to a pre-treatment process for wrapping an oil-immersed, upright, capacitively insulated current transformer, comprising the following steps: Step 1, placing a cardboard positioning fixture onto the straight section of the primary conductor; Step 2, placing insulating cardboard into the cardboard positioning groove within the cardboard positioning fixture; Step 3, moving the cardboard positioning fixture to the set position on the straight section and locking it; Step 4, wrapping the straight section using fiberless tape starting from the top, and when wrapping to any position of the cardboard positioning fixture, unscrewing the adjusting bolt to remove the cardboard positioning fixture; Step 5, wrapping the loop section of the primary conductor with shrink-wrap tape; Step 6, wrapping the loop section and the straight section entirely with crepe paper; Step 7, wrapping the zero-shield starting from the outside of the primary conductor. This invention is designed for a special current transformer structure where each end screen is stacked sequentially from the inside out and extends towards the loop section of the primary conductor, ensuring a regular overall cross-sectional shape of the straight section of the primary conductor.

The utility model relates to a kind of line material winding art paper rotary module, including seat, the front side of the seat is equipped with first clamping device, the seat is equipped with sliding seat, clamping pressing assembly is equipped on the sliding seat, the clamping pressing assembly includes fixedly connected on the sliding seat and the forward protruding arbor, the second clamping device is connected with the front end of the arbor, the rotating sleeve that can rotate around it is set on the arbor, and the pressing device for pressing art paper is connected with the front end of rotating sleeve, the first drive mechanism that can drive rotating sleeve rotation to drive pressing device and wind art paper on line is further equipped on the sliding seat on the arbor front end is installed simultaneously, the pressing device is installed in rotating sleeve front side set on the arbor, so that the structure of clamping pressing assembly is compact, can adapt to the compact automatic production line environment of space limited, while, more easily integrated with other equipment.