DE202014106171U1 - Edging strip for furniture - Google Patents

Abstract

An edge strip (1) for furniture, comprising a melt layer (3) and a structural layer (2) connected to the melt layer (3), both of which at least partially comprise a polymeric material, characterized in that the structural layer (2) is at least partially inorganic and / or organic pigment-containing additive in an amount of about 0.01 to 10 wt .-%, preferably 0.02 to 10 wt .-%, based on their total weight having.

Description

The invention relates to an edge strip for furniture, comprising a melt layer and a structural layer connected to the melt layer, both of which at least partially comprise a polymeric material.

It has been known for many years from the prior art that plastic edges are usually applied to edges of wood-based panels by suitable machines. In this case, an adhesive bond is often realized, which is either a so-called. Hot melt adhesive, which is rolled on the plastic edge in a continuous process or by an adhesive that has been previously applied to the plastic edge, for example by a subsequent coating, by a coextrusion and the like and be liquefied again by means of an energy input and then pressed or welded together with the edge to the narrow side of a furniture panel.

A generic edge strip for furniture is for example in the EP 1 163 864 B1 disclosed. This plastic edge consists of plastic layers of different hardness, wherein a region of greater hardness of the plastic edge has a thickness more than twice as large as a region of lower hardness. This plastic edge consists for example of the material acrylonitrile-butadiene-styrene (ABS) or polyvinyl chloride (PVC). Furthermore, this plastic edge can also consist of polyethylene (PE). This plastic edge is further formed so that it is melted by means of an energy input, for example via a diode laser or a semiconductor laser on its surface and the plastic edge is then joined with its molten surface on a panel body. The advantage of this plastic edge should be that only a thin layer of the plastic edge is melted by laser application and fused with the panel body, while the remaining thicker layer of the plastic edge is held in the solid phase state.

It is a plastic edge used, the areas of different hardness has, in particular, a coextruded thermoplastic edge is used. The layer of plastic edge facing the panel body is softer and easier to reflow, i. it has a lower melting point than the hard outer layer of the plastic edge.

A disadvantage of this edge is seen that when introducing the laser energy beam powers in the range of 100 W and more are required to melt the thin layer of the plastic edge over the entire surface and in a penetration depth of about 0.2 to 0.5 mm. The required power of the laser used can cause the melted thin layer of the plastic edge is thermally stressed or damaged so that a subsequent bonding or welding with the furniture panel is no longer possible. Another disadvantage of the disclosed plastic edge is that the strength of the achievable cohesive connection between the thin, molten layer of the plastic edge and the narrow side of the furniture panel no longer meet today's requirements.

Another disadvantage of this plastic edge is that the energy input required for the melting of the thin layer is only partially absorbed by laser energy and converted into heat, while a portion of this laser energy is reflected by reflection or passed through transmission through the entire plastic edge , That In certain plastic edges of the prior art, which have a high transmission compared to, for example, laser radiation, a part of the incoming laser energy is not converted into heat, but passes through this plastic edge. The disadvantage of this is that at a certain amount of energy, which is passed through the transmission of the plastic edge, the manufacturing plant on which the plastic edge is attached to the furniture panel, switches to interference. This unfavorably leads to defective parts, a costly interruption of current production and additional costs.

This is where the invention, which has set itself the task to show an edge strip for furniture, which is inexpensive and economical to produce and which can be attached at any time process reliable pieces of furniture, without a gap between the edge strip and the front side of the furniture is visible.

According to the invention this is realized by an edge strip with the features of claim 1 and a piece of furniture having the features of claim 11. Further advantageous embodiments are described in the subclaims.

It has surprisingly been found in various tests that an edge strip for pieces of furniture comprising a melt layer and a layer connected to the melt layer, both of which at least partially comprise a polymeric material is characterized in that the structural layer at least one, partially inorganic and / or additive containing organic pigments in an amount of about 0, 01 to 10 wt .-%, preferably 0.02 to 5 wt .-%, based on their total weight, having. This advantageous embodiment of the edge strip according to the invention, the known from the prior art, resulting from transmission residual radiation can be absorbed in the structural layer. It has surprisingly been found that the addition of such additives, which are matched to the wavelength of the energy source used, absorbs the residual radiation resulting from transmission and partially heats the structural layer. Another advantage of this edge strip according to the invention is that in addition to the energy input flexible melt layer and its associated structure layer is heated and so the edge strip according to the invention for the subsequent processing are more flexible or elastic and thus much easier, in particular free-form surfaces are fixed. A further advantage of the edge strip according to the invention is that the additional surprising absorption of the radiation which has been trasmitted through the melt layer in the structural layer effectively prevents radiation from passing into the production plant and thus shutting it down.

Another advantage of the edge strip according to the invention is that additive of the melt view is selected from orthophosphates, polyphosphates, pyro-phosphates and hydroxide phosphates.

In a further advantageous embodiment of the edge strip according to the invention, the additive of the melt layer is selected from copper, phosphates, tin phosphates, iron phosphates, nickel phosphates, molybdenum phosphates, cobalt phosphates, manganese phosphates and antimony phosphates and more preferably copper Phosphates, tin phosphates and iron phosphates. By this selection of various additives for the melt layer of the edge strip according to the invention, this can on the one hand be cost-effective and economical to produce and at any time be reliably attached to the narrow sides of furniture.

In a further preferred embodiment, the addition of the structural layer copper hydroxide phosphate, iron hydroxide phosphate in an amount of about 0.01 to 10 wt .-%, preferably 0.02 to 5 wt .-%, based on the total mass of the structural layer. In a further likewise advantageous embodiment of the edge strip according to the invention, the additive of the melt layer has an average particle size (D 50) of less than 50 μm, preferably less than 15 μm, preferably less than 10 μm. As a result, an optimal distribution within the melt layer of the edge strip according to the invention is advantageously possible.

In a preferred embodiment of the edge strip according to the invention, the material of the melt layer contains at least one of the following additives: stabilizers for improving the resistance to light, UV radiation and weathering; Stabilizers for improving the thermal and thermal oxidative resistance; Stabilizers for improving the hydrolytic resistance, stabilizers for improving the acidolytic resistance, lubricants, mold release agents, coloring additives, crystallization-regulating substances and nucleating agents, flame retardants, impact modifiers, fillers and / or plasticizers.

Another advantage of the edge strip according to the invention is that the structural layer and / or the melt layer on polyvinyl chloride (PVC); Polyolefin, such as polypropylene (PP) or polyethylene (PE); a styrene-based polymer such as polystyrene (PS) or styrene-butadiene predominantly styrene (SB) copolymer or acrylonitrile-styrene-acrylic ester copolymers (ASA) or acrylonitrile-butadiene-styrene copolymers (ABS) or styrene-acrylonitrile (SAN); Polybutylene terephthalate (PBT); Polyethylene terephthalate (PET); Polyoxymethylene (POM); Polyamide (PA); Polymethyl methacrylate (PMMA); Polyphenylene oxide (PPO); Polyetheretherketone (PEEK); Polyphenylene sulfide (PPS); Liquid Crystal Polymer (LCP); Polyamide-imides (PAI); Polyvinylidene fluoride (PVDF); Polyphenylsulfone (PPSU); Polyaryletherketone (PAEK); Polyacrylonitrile (PAN); Polychlorotrifluoroethylene (PCTFE); Polyether ketone (PEK); Polyimide (PI); Polyisobutene (PIB); Polyphthalamide (PPA); Polypyrrole (PPY); Polytetrafluoroethylene (PTFE); Polyurethane (PUR); Polyvinyl alcohol (PVA); Polyvinyl acetate (PVAC); Polyvinylidene chloride (PVDC) as well as mixtures of at least two of these materials is based. In this case, the polymer material of the structural layer may be admixed with suitable fillers and / or reinforcing substances which positively influence the mechanical properties, in particular glass fibers, glass spheres, but also fillers such as chalk, Teflon and the like. The fillers and / or reinforcing materials are contained in amounts of about 5 to 50 wt .-%, preferably 10 to 35 wt .-%, based on the total mass.

An extremely advantageous embodiment of the edge strip according to the invention is designed such that no, one or more intermediate layers are provided between the structural layer and the melt layer.

The edge strip according to the invention is characterized in particular by the fact that the material of the melt layer is a copolymer, preferably a Graft copolymer, preferably a maleic anhydride grafted polyolefin. Particularly advantageously, the material of the melt layer is a maleic anhydride-grafted polypropylene. The edge strip according to the invention is advantageously also designed so that the melt layer has both polar and nonpolar portions in the molecular structure, ie, the material of the melt layer is chemically modified so that it has both polar and nonpolar portions in the molecular structure.

Also advantageous in the edge strip according to the invention is that the melt layer has a thickness of about 0.1 to 1.5 mm, preferably 0.2 to 0.5 mm. These dimensions lead to an economical and cost-effective production of the edge strip according to the invention.

The invention further relates to a piece of furniture with an edge strip with the features described above, this being characterized in that the underside of the edge strip is fully bonded to the edge of the piece of furniture materially.

The invention will be described in more detail with reference to these non-limiting embodiments.

Show it:

1 : schematic sectional view of a piece of furniture and an edge strip according to the invention to be attached thereto,

2 : schematic sectional view of a piece of furniture and attached edge strip according to the invention.

The edge strip according to the invention 1 for furniture 4 includes a melt layer 3 and a structural layer 2 ,

The melt layer 3 has in this embodiment, both polar and non-polar parts in the molecular structure, ie, the material of the melt layer 3 is chemically modified to contain both polar and nonpolar portions in the molecular structure.

Between the structural layer 2 and the melt layer 3 no, one or more intermediate layers may be provided, so that the structural layer 2 and the melt layer 3 at least indirectly, preferably directly connected to each other.

As a structural layer 2 the edge strip 1 For the purposes of the invention, a layer is referred to as the edge strip 1 essentially their structure or their geometry and their design gives. The material of the structural layer 2 can be selected from any materials such as polymeric materials. In this embodiment, the structural layer is 2 made of a polyolefin, particularly preferably made of a polypropylene. The structural layer 2 has in this embodiment at least one, at least partially inorganic and / or organic pigments containing additive in an amount of about 0.01 to 10 wt .-%, preferably 0.02 to 5 wt .-%, based on their total weight on , In this embodiment, the additive is a copper hydroxide phosphate in an amount of about 0.5% by weight, based on its total weight.

The material of the melt layer 3 is chemically modified in this embodiment to the effect that it has both polar and nonpolar portions in the molecular structure, preferably, the material of the melt layer 3 a maleic anhydride grafted polypropylene. The material of the melt layer 3 contains in this embodiment, a proportion of up to 4% polar and / or reactive groups in the molecular structure, preferably between 0.5 and 2%.

The melt layer 3 is melted by applying energy from an energy source and then the edge strip 1 not shown pressing elements on the structural layer 2 directly to the front side 40 of the furniture 4 Pressed and fixed.

The in the structural layer 2 integrated additives now take that through transmission through the melt layer 3 penetrating portion of the energy and convert this by absorption into heat. Thus, the melt layer becomes 3 as well as the structural layer 2 melted or heated by the absorbed heat and the edge strip according to the invention can be easily and reliably on the front page 40 of the furniture 4 Attach.

In the 2 is a perspective sectional view of a piece of furniture 4 with the edge strip according to the invention 1 shown, wherein the melt layer 3 the edge strip 1 cohesively with the front side 40 of the furniture 4 connected is.

In this embodiment, the structural layer 2 the edge strip 1 Energy absorbing additives, preferably light and / or radiation absorbing additives in an amount of 0.3 wt .-%, based on their total weight and comprises iron hydroxide.

The material of the melt layer 3 is in this embodiment, a non-reactive hot melt adhesive based on ethylene vinyl acetates (EVA), while the material of the structural layer 2 consists of the material acrylonitrile-butadiene-styrene copolymer (ABS).

By applying energy from an energy source selected from the group consisting of laser, infrared source, ultrasound source, magnetic field source, microwave source, plasma source and fumigation source, that in the melt layer 3 contained energy absorbing additive which receive energy supplied by the energy source and the melt layer 3 heat above the melting point. The through the melt layer 3 Through transmission passing share of the introduced energy from the energy source is now by the in the structural layer 2 contained additive and also converted into heat.

The structural layer 2 the edge strip according to the invention 1 can be adjusted so that only a certain proportion of the thickness of the structural layer 2 is heated and so the edge strip according to the invention 1 especially for applications in free-form surfaces more flexible at the end faces 40 the pieces of furniture 4 attachable.

By during the joining operation of the edge strip according to the invention 1 in the melt layer 3 and the structural layer 2 absorbed energy of the energy source provides the additive contained there by the absorption and / or reflection of energy for a more optimal distribution of energy.

The edge strip according to the invention 1 but also characterized by the fact that the additive of the structural layer 2 has an average particle size (D 50) of less than 50 μm, preferably less than 15 μm, preferably less than 10 μm. As a result, both a cost-effective and economical production of the edge strip according to the invention 1 possible, while continuing to use the edge strip according to the invention as intended 1 by introducing energy from an energy source onto the structural layer 2 their effect is optimized.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1163864 B1 [0003]

Claims (11)

Edge strip ( 1 ) for furniture comprising a layer of enamel ( 3 ) and one with the melt layer ( 3 ) associated structural layer ( 2 ), both of which at least partially comprise a polymeric material, characterized in that the structural layer ( 2 ) at least one, partially inorganic and / or organic pigments containing, additive in an amount of about 0.01 to 10 wt .-%, preferably 0.02 to 10 wt .-%, based on their total weight having. Edge strip ( 1 ) according to claim 1, characterized in that the additive of the structural layer ( 2 ) is selected from the group of metal oxides, the metal phosphates and the metal salts of organic anions. Edge strip ( 1 ) According to one of the preceding claims, characterized in that the additive of the structure layer ( 2 ) is selected from orthophosphates, polyphosphates, pyro-phosphates and hydroxide phosphates. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the additive of the structural layer ( 2 ) is selected from copper phosphates, tin phosphates, iron phosphates, nickel phosphates, molybdenum phosphates, cobalt phosphates, manganese phosphates and antimony phosphates. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the additive of the structural layer ( 2 ) Copper hydroxide phosphate, iron hydroxide phosphate. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the additive of the structural layer ( 2 ) has an average particle size (D50) of less than 50 μm, preferably less than 15 μm, preferably less than 10 μm. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the material of the structural layer ( 2 ) contains at least one of the following additives: stabilizers to improve the resistance to light, UV radiation and weathering; Stabilizers for improving the thermal and thermal oxidative resistance; Stabilizers for improving the hydrolytic resistance, stabilizers for improving the acidolytic resistance, lubricants, mold release agents, color additives, crystallization-regulating substances and nucleating agents, flame retardants, impact modifiers, fillers and / or plasticizers. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the melt layer ( 3 ) on thermoplastic, in particular non-reactive hotmelt adhesives, in particular based on ethylene / vinyl acetates (EVA); polyolefins; polyacrylates; copolyamides; copolyesters; and / or thermoplastic polyurethanes or their corresponding co- and / or terpolymers; and mixtures of at least two of these materials. Edge strip ( 1 ) according to one of the preceding claims, characterized in that between the structural layer ( 2 ) and the melt layer ( 3 ) none, one or more intermediate layers are provided. Edge strip ( 1 ) according to one of the preceding claims, characterized in that the melt layer ( 3 ) has a thickness of 0.1 to 1.5 mm, preferably 0.2 to 0.5 mm. Furniture ( 4 ) with an edge strip ( 1 ) according to one of the preceding claims, characterized in that the underside ( 30 ) the edge strip ( 1 ) over the entire surface with the edge ( 40 ) of the piece of furniture ( 4 ) is integrally connected.

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