Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J7/00—Adhesives in the form of films or foils
  • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
  • C09J7/21—Paper; Textile fabrics
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J7/00—Adhesives in the form of films or foils
  • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
  • C09J7/38—Pressure-sensitive adhesives [PSA]
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K7/00—Use of ingredients characterised by shape
  • C08K7/02—Fibres or whiskers
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
  • C09J2203/302—Applications of adhesives in processes or use of adhesives in the form of films or foils for bundling cables
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2301/00—Additional features of adhesives in the form of films or foils
  • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
  • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2400/00—Presence of inorganic and organic materials
  • C09J2400/20—Presence of organic materials
  • C09J2400/26—Presence of textile or fabric
  • C09J2400/263—Presence of textile or fabric in the substrate
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2407/00—Presence of natural rubber
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2433/00—Presence of (meth)acrylic polymer
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J2467/00—Presence of polyester
  • C09J2467/006—Presence of polyester in the substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249954—With chemically effective material or specified gas other than air, N, or carbon dioxide in void-containing component
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
  • Y10T428/266—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension of base or substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
  • Y10T428/2813—Heat or solvent activated or sealable
  • Y10T428/2817—Heat sealable

Definitions

• the invention relates to an adhesive tape with a carrier made of a spunbonded nonwoven, which is coated on one side with a pressure-sensitive adhesive, for thermal welding such as HF welding or ultrasonic welding on a polymeric substrate.
• Adhesive tapes with a spunbonded carrier are known. These are used for example for the bandaging of wiring harnesses.
• DE 195 23 494 A1 describes a self-adhesive tape for bandaging cable harnesses with a band-shaped textile carrier, which consists of spunbonded nonwoven.
• the nonwoven used according to the invention is a spunbonded nonwoven made of polypropylene, which is thermally bonded and embossed with the aid of a calender, the embossing roll having an embossing surface of 10% to 30%, preferably 19%. Due to its special design, the adhesive tape has good hand tearing properties and good rolling properties when used for harness bandaging.
• DE 298 04 431 U also discloses the use of an adhesive tape with a carrier made of nonwoven material for bandaging wire harnesses, the proposed spunbonded nonwoven being made of polyester.
• EP 0 932 234 A1 describes a method for fastening a component on a carrier material.
• the component is fastened by a fastening means having a contact surface in that the contact surface consists of a material which can be thermally welded to the carrier material and the fastening means is fastened by thermal welding of the contact surface to the carrier material.
• the term component means smaller attachments such as sensors, lights or electrical lines.
• the thermally welded surface may, for example, be wrapped around the component in a ring shape, so that the component is secured on all sides against slipping.
• the fastening means is then expediently a film which is placed on laid on the carrier material lines and then thermally welded to the manner of a sticking plaster on both sides of the line.
• a cable binder is used with an additional contact surface, which is welded to the carrier material.
• film is understood to mean a flat, homogeneous, flexible structure, including paper and textile fabrics made of natural and synthetic fibers such as nonwovens and woven fabrics.
• the edge areas can be welded or glued.
• Ultrasonic welding is a process for joining plastics. Basically, only thermoplastics can be welded. In principle, but also metals can be welded, which is also used for example in electrical engineering in the wiring of microchips. As with all other welding processes, the material must be melted at the weld site by applying heat. In ultrasonic welding, it is generated by a high-frequency mechanical vibration. The main feature of this method is that the heat required for welding between the components is created by molecular and boundary surface friction in the components. Thus, ultrasonic welding belongs to the group of friction welding.
• the ultrasonic welding device consists essentially of the assemblies:
• the vibrations are transmitted under pressure of 2 to 5 N / mm 2 to the workpiece clamped between the sonotrode and an anvil, whereby the heat required for plasticizing is produced by molecular and boundary surface friction. Due to the local temperature of the plastic begins to soften and the damping coefficient increases. The increase of the damping factor leads to further heat generation, which ensures the effect of a self-accelerating reaction. This process is characterized by very low welding times and thus often high efficiency.
• High-frequency welding is a pressure welding process under the influence of heat, which develops on the basis of the ohmic losses in the parts to be joined.
• the two variations in the application of RF current in welding are inductive and conductive energy input.
• conductive HF welding the energy is introduced via busbars or sliding contacts, whereas in the case of the inductive variant this is done by means of an induction coil located above the parts to be joined.
• the high-frequency alternating current flowing through electrodynamic effects on the parts to be joined heats up the connection point and by force application, the parts are positively connected with each other.
• the thermoplastics to be welded must have a dielectric loss factor of d> 0.01
• inductive-energy HF welding in industry is mainly used for the production of longitudinal seam tubes.
• thermal welding processes include hot air welding and hot rod welding.
• Object of the present invention is to provide an adhesive tape which can be thermally welded to the respective substrate and in particular is able to produce a secure connection even on release-agent surfaces, and to improve an adhesive tape so that the disadvantages of the prior art or not at least not to the extent occur.
• the invention relates to an adhesive tape with a carrier of a spunbonded nonwoven, which is coated on one side with a pressure-sensitive adhesive at least partially, preferably over the entire surface, for thermal welding such as HF welding or ultrasonic welding on a polymeric substrate, wherein the adhesive is based on natural rubber or acrylate and wherein the adhesive fibers are added, which do not melt in a thermal welding process.
• the adhesive tape has as a carrier a spunbonded polyester, in particular polyester and co-polyester fibers, which are further preferably solidified and / or embossed flat with the aid of a calender.
• the proportion of polyester fibers in the carrier is in a further advantageous embodiment of the invention more than 70 wt .-%, preferably more than 80 wt .-%, and to co-polyester fibers of less than 30 wt .-%, preferably less than 20 wt .-%.
• Nonwoven weight 30 to 200 g / m 2 , preferably 70 to 100 g / m 2 , more preferably 85 g / m 2
• Thickness 250 ⁇ m to 800 ⁇ m, preferably 500 ⁇ m to 600 ⁇ m, more preferably 560 ⁇ m
• Elongation at break 17 to 87%, preferably 25 to 40%, more preferably
• Filament is measured in mass per unit length. The yarn count does not say anything about the strength of the yarn or the volume.
• a high yarn count means a smaller, a high titer a larger ratio
• Invention 1 to 4.5 dtex, preferably of 2.2 dtex.
• a calender for embossing the spunbonded fabric preferably a two-roll calender, which consists of at least one smooth roll and / or one gravure roll, is used.
• the gravure roll preferably has an embossing surface of 10 to 30%, preferably 15%.
• the trough depth resulting from the calendering in the embossing of the carrier according to the invention is dependent on several factors during the process of calendering.
• the temperature of the embossing roll, the pressure exerted on the spunbonded web in the nip between the rolls, and the speed at which the spunbond passes through the nip play a crucial role.
• the carrier is formed by a spunbonded polypropylene, which can also be thermally consolidated and embossed by means of a calender.
• the nonwoven advantageously has the following combination of properties: Nonwoven weight: 30 to 200 g / m 2 , preferably 70 to 100 g / m 2 , more preferably 85 g / m 2 Thickness: 250 ⁇ m to 800 ⁇ m, preferably 500 ⁇ m to 600 ⁇ m, more preferably 560 ⁇ m
• the fineness of the nonwoven is 2 dtex to 7 dtex, preferably 4 dtex.
• the calender used is preferably a two-roll calender consisting of a smooth roll and a gravure roll.
• the gravure roll has an embossing surface of 10% to 30%, preferably 19%.
• the depression depth resulting from the calendering in the embossing of the carrier according to the invention is again dependent on a number of factors during the process of calendering.
• the temperature of the embossing roll, the pressure exerted on the spunbonded web in the nip between the rolls, and the speed at which the spunbond passes through the nip play a crucial role.
• the following parameters prove to be particularly advantageous for an optimal design of the spunbonded fabric for further processing:
• the spunbonded is white, but at least brightly colored.
• the melting fiber portions in the spunbonded melt with the polymeric
• Metallic particles such as metal powders, can be added to the spunbonded backing in order to allow inductive heat to develop in the spunbonded fabric during the welding process.
• the spunbond is unilaterally at least partially with a pressure-sensitive adhesive
• the coating is based on known methods such as coating or
• the adhesive is physically, thermally, chemically and / or crosslinked by ESH, preferably chemically.
• ESH acrylate with long molecular chains, which has a K value of at least 70, in particular equal to 75 (measured in each case in
• the K value is determined in particular in analogy to DIN 53 726.
• the polymer 1 is diluted down to a solids content of 30% with 60/95 petroleum spirit. Subsequently, 25% by weight (based on the proportion of polymer 1) of rosin (glyceryl ester) Foral TM 85 (Eastman Chemical) and 0.3% by weight (based on the proportion of polymer 1) of aluminum (III) acetylacetonate ( as a 3% solution in isopropanol) and completely dissolved.
• the preferably transparent adhesive is reinforced by mineral fibers such as preferably glass fibers, carbon fibers and / or plastic fibers, but in particular glass fibers.
• the fibers are added to the adhesive to 2 to 5 wt .-%, preferably 3 wt .-%.
• the fibers are preferably made of polyvinyl alcohol and preferably have the following parameters:
• Thickness ⁇ 3 ⁇ m, preferably 5 ⁇ m to 15 ⁇ m, particularly preferably
• the total thickness of the adhesive layer is 20 to 200 microns, preferably 50 microns, which represents a good balance of isolation on the one hand and costs on the other hand.
• the long molecular chains in combination with the fibers which do not change during the welding process reduce uncontrolled leakage of the self-adhesive composition from the welding zone during welding and avoid the cleaning effort on the sonotrode. At the same time, the fibers reinforce the cohesive bond that sets up after welding.
• the fibers do not melt under the introduction of pressure and ultrasound for welding, so that a brief ultrasonic application does not lead to leakage of the self-adhesive.
• the uncoated backside of the nonwoven backing may be antiadhesive treated.
• a spunbonded polyester Due to its chemical composition and its special fiber mixture, a spunbonded polyester has excellent properties, so that it as a carrier in an adhesive tape is able to form an excellent cohesive connection to a wide variety of polymeric substrates when it is thermowelded, for example under ultrasound application and pressure, and subsequently cures.
• spunbonded nonwovens made of polypropylene can be thermally welded only on chemically similar polymer substrates, ie polyolefin substrates, this nevertheless leads to similarly excellent results as in polyester spunbonded nonwovens.
• spunbonded nonwovens have higher tensile forces in the longitudinal and transverse direction than comparable nonwovens.
• the adhesive tape according to the invention in its preferred use as a fastening loop shows that the components not only withstand the load when driving vehicles, but especially in the edge region of the weld.
• An excellent weld is characterized by the fact that it has a sufficient width over the desired length and is completely dark or lightly discolored (quasi a different color than the spunbond or the substrate has). Thus, an optical control can be seen directly in the welding.
• the adhesive tape has an excellent damping characteristic due to its preferred embossing. This is due to the special structure of the embossed carrier with highly compressed flat and less dense and particularly flexible shares.
• the adhesive tape combines in its purpose as a fastening loop both excellent tear properties and special damping properties.
• the adhesive tape according to the invention is particularly advantageously used for thermal welding, such as HF welding or ultrasonic welding of components, in particular for welding cables or wire harnesses in the automotive sector.
• the component is partially or completely surrounded by the adhesive tape, so that the component is in contact with the adhesive coating.
• the component can be fixed on the contact surface, on which the adhesive tape is finally fixed by the welding process, by the adhesive coating of the adhesive tape itself.
• the contact surface consists of a material which can be thermally welded to the carrier material, and the adhesive tape is fastened by thermal welding of the contact surface with the same. As a result, the component is fixed on the contact surface at the same time.
• the manufacturing-technical accessibility of the component is less critical, which simplifies the implementation of the method with automatic welding machines.
• the component which again in particular the wiring harness is meant, radially completely enclosed by the adhesive tape, so that the component is secured on all sides against slipping.
• the adhesive tape can thus form a projecting flag, for example by pressing the open ends of the adhesive tape against one another with the adhesive side. This flag can then be welded.
• thermal welding is that it can be dispensed with separate fastening means or connecting means.
• there is a sufficiently large welding surface for secure attachment available but at the same time, the risk of thermal and / or mechanical damage to the parts to be welded can be reduced because they and the welding surface are sufficiently spaced apart.
• the particular of the adhesive tape according to the invention is that in this two completely different joining techniques are united, namely on the ground (for example, headliner or door inner lining) facing side - preferably effected by ultrasound application - welded joint and on the other, the attachment (for example, harness ) facing side a connection by means of pressure-sensitive adhesive.
• Figure 2 shows a cross section through a wire harness, which is coated by the adhesive tape according to the invention radially, wherein the adhesive tape is thermally welded to a substrate.
• Adhesive tape 1 has a spun fleece carrier 11, the underside with a
• Adhesive coating 12 is provided. In the adhesive coating 12 glass fibers 13 are distributed.
• the wiring harness 2 comprises a plurality of individual lines 21, which are completely wrapped by the adhesive tape 1, in such a way that the
• Adhesive coating 12 of the adhesive tape 1 is located inside. The adhesive coating is therefore in contact with the lines 21.
• the ends of the adhesive tape 1 are glued together and form a so-called
• the sonotrode 4 is placed on the flag 5 with pressure and provides the energy required for the welding process. Since the roof lining is a lining part of a motor vehicle, the welding takes place on the side facing the vehicle body. Since the attachment from the vehicle interior is not visible, optical impairments of the attachment can be accepted.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Adhesive Tapes (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Laminated Bodies (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36933522

Family Applications (1)

Country Status (8)

Cited By (4)

Families Citing this family (17)

Citations (5)

Family Cites Families (19)

• 2005
  • 2005-08-05 DE DE102005037662A patent/DE102005037662A1/de not_active Withdrawn
• 2006
  • 2006-07-12 ES ES06764132T patent/ES2336141T3/es active Active
  • 2006-07-12 EP EP20060764132 patent/EP1920019B1/de active Active
  • 2006-07-12 AT AT06764132T patent/ATE450585T1/de active
  • 2006-07-12 JP JP2008524463A patent/JP5294856B2/ja not_active Expired - Fee Related
  • 2006-07-12 WO PCT/EP2006/064120 patent/WO2007017332A1/de not_active Ceased
  • 2006-07-12 US US11/997,242 patent/US20090075052A1/en not_active Abandoned
  • 2006-07-12 CN CN2006800280025A patent/CN101233202B/zh not_active Expired - Fee Related
  • 2006-07-12 DE DE200650005536 patent/DE502006005536D1/de active Active

Patent Citations (5)

Also Published As

Similar Documents

Legal Events