摘要:
The invention relates to a UV irradiation unit comprising a housing (10), a rod-shaped lamp (12) which is arranged therein, a reflector (14) which extends along the UV-lamp (12) and which defines a lamp chamber (22) which surrounds the UV-lamp (12), in addition to a channel system (20) for guiding a cooling coolant through the reflector (14). According to the invention, the channel system (20) is arranged on the outside of the lamp chamber (22) such that it remains void of the coolant flow (24) for operating the lamp in an optimum manner.
摘要:
The invention relates to an irradiation unit for the UV irradiation of particularly web-shaped substrates, comprising a housing (10), a tubular UV lamp (12), arranged therein and a reflector arrangement (14), running along the UV lamp (12). According to the invention, a simple exchangeability may be achieved, whereby the reflector arrangement comprises a support profile (22), retained in the housing (10) and a reflector profile (24), embodied as a shape-retaining molded piece which may be detachably connected thereto.
摘要:
The invention relates to an irradiation unit for the UV irradiation of particularly web-shaped substrates, comprising a housing (10), a tubular UV lamp (12), arranged therein and a reflector arrangement (14), running along the UV lamp (12). According to the invention, a simple exchangeability may be achieved, whereby the reflector arrangement comprises a support profile (22), retained in the housing (10) and a reflector profile (24), embodied as a shape-retaining molded piece which may be detachably connected thereto.
摘要:
The invention relates to a device and a method for the corona treatment of flat material (30) using a cylindrical transport electrode (1) that can be rotated in such a way as to transport the flat material, a treatment electrode (2a,b) which is arranged opposite the transport electrode (1) and defines a treatment gap (31) for the flat material (30), a high-voltage source (4) for applying a high-frequency electrical voltage to the treatment electrode (2a, b), and sheet holders (11) which are arranged on the envelope side of the transport electrode (1) and used to receive the edges of sheets of flat materials (30). The inventive device is characterized by a treatment device (12) wherein blowing means (22, 23) are embodied or arranged in front of, and behind, at least one treatment electrode (2a, 2b), in the direction of transport (32). A gaseous medium (16, 17) can be guided through the blowing means towards the flat material (30) located in the treatment gap (31) in such a way that it lies in a plane manner on the envelope surface of the transport electrode (1) at least in the region of the treatment gap (31).
摘要:
The invention relates to an irradiating device, especially for irradiating with ultraviolet light substrates which are provided with a coating that can be cured using ultraviolet light. The inventive device comprises a longitudinally extending radiation source (12) which is provided for emitting ultraviolet and/or visible electromagnetic radiation, which is arranged in a housing (10) between a reflector (18) and a housing opening (14) that can be aligned with an object (16) to be irradiated, and which is preferably configured as a tubular mercury discharge lamp. The inventive device also comprises a cooling system (20) for dissipating the waste heat generated by the radiation source (12). The aim of the invention is to create a compact modular construction and, optionally, an oxygen-reduced illumination zone. To this end, the invention provides that the cooling system (20) has a cooling circuit (26) arranged inside the housing (10) and which effects a circulatory cooling of the radiation source (12) by means of a force-conveyed, optionally oxygen-reduced cooling gas steam (28).
摘要:
The invention relates to a method for raising the surface tension of biaxially-stretched films made of thermoplastic polymers. According to the method, a film is first treated on a surface by means of an atmospheric pressure plasma before being stretched transversally or simultaneously across the width thereof, and the film is additional a subjected to a second treatment by means of a corona or flame after being stretched transversally or simultaneously, the second treatment being done on the same surface which has already been plasma-treated.
摘要:
The invention relates to a metallized, biaxially oriented, transparent polypropylene multi-layer film which contains at least two layers, wherein the layers comprise a base layer and at least one first metallized cover layer on a surface of the base layer wherein the layer contains at least 80% by weight of a propylene-ethylene copolymer which has an ethylene content of 1.2 to
摘要:
The invention relates to a multilayered, opaque, biaxially oriented polyolefin film having a thickness of at least 30 μm consisting of a vacuole-containing base layer and intermediate layers applied to both sides thereof, and cover layers applied to either side of the intermediate layers. Both intermediate layers have a thickness of at least 3 μm and contain at least 70% by weight of a propylene homopolymer. Both cover layers are constructed from incompatible polymers. The inner cover layer has a surface roughness Rz of at least 3.0 μm and the outer cover layer has a roughness from 1 to 3 μm, the roughness of the inner cover layer being at least 1.5 units greater than the roughness of the outer cover layer.
摘要:
A UV emitter for drying surface-treated substrates has a housing with an opening aligned toward the substrate. A radiation source is arranged within the housing. At least one air outlet is provided at the opening for an air current sweeping over the opening.
摘要:
The invention relates to a method for manufacturing a multilayer biaxially oriented film which comprises at least five layers having the arrangement A/B/C/B/A, the inner layer C being synthesized from an ethylene-vinyl-alcohol copolymer (EVOH layer) and an adhesion promoting layer B made of modified polyolefin being applied on both sides on each surface of the EVOH layer C and a layer A made of a partially crystalline thermoplastic polyolefin being applied to the surfaces of the particular adhesion promoting layers, characterized in that the melts corresponding to the individual layers of the film are coextruded through a sheet die, the multilayer film thus obtained is drawn off on one or more roll(s) for solidification, the film is subsequently stretched in the longitudinal direction and then in the transverse direction using a tenter frame, the EVOH layer C and the adhesion promoting layers B and the layer A are coextruded at the same width, and the tenter hooks of the frame engage all five layers jointly and simultaneously during the transverse stretching. The invention also relates to a film, and a packaging made from the film.
摘要翻译:本发明涉及一种制造多层双轴取向薄膜的方法,该薄膜包括至少五层具有排列A / B / C / B / A的层,内层C由乙烯 - 乙烯醇共聚物(EVOH层)合成, 将由改性聚烯烃构成的粘合促进层B施加在EVOH层C的每个表面的两侧,并且将由部分结晶的热塑性聚烯烃制成的层A施加到特定粘合促进层的表面,其特征在于, 通过片模共挤出对应于膜的各层的熔融,将由此获得的多层膜在一个或多个辊上拉出固化,然后将膜沿纵向方向,然后沿横向拉伸 使用拉幅机框架,EVOH层C和粘合促进层B和层A以相同的宽度共挤出,并且框架的拉幅机钩接合 在横向拉伸过程中,共有五层。 本发明还涉及一种薄膜以及由该薄膜制成的包装。