Dispenser part, comprising at least two component parts (17, 18; 31, 32; 41a, 42a; 41b, 42b; 41c, 42c; 41d; 42d) each joined by a seam (21; 33; 43a; 43b; 43c; 43d), said dispenser part comprising a first injection moulded plastic component part (17; 31; 41a) having an associated first mating surface; a second injection moulded plastic component part (18; 32; 42a) having an associated second mating surface; and a seam (21; 33; 43a) formed by said first mating surface and said second mating surface during a two component injection moulding for joining said first component part and said second component part (17, 18; 31, 32; 41a, 42a; 41b, 42b; 41c, 42c; 41 d; 42d) to define a dispenser part, characterized in that a transverse cross section of the seam comprises at least one raised contact increasing means; the resulting seam (21; 33; 43a; 43b; 43d) has an impact strength equal to or greater than the strength of at least one of said first and second moulded plastic component parts (17, 18; 31, 32; 41a, 42a; 41b, 42b; 41c, 42c; 41 d; 42d) adjacent the seam (21; 33; 43a; 43b; 43c), wherein the seam (21; 33; 43a) has an impact strength of at least 10 Joules, preferably 15 Joules as measured by an impact strength test method, the method comprising: - using a 13 kg weight attached to an arm having a length of 0,75 m, the part of the weight arranged to impact a front surface of the dispenser part has an area corresponding to a flat rectangular area of about 63 cm 2 of 7 × 9 cm, - pivoting the arm to which the weight is attached from a vertical to a horizontal position, through an arc to an angle, and released, where the size of the arc corresponds to an impact strength of at least 10 Joules, preferably 15 Joules; and wherein each of said first component and said second component part (17, 18; 31, 32; 41a, 42a) is selected from the group ABS plastic material, or wherein said first component part (17; 31; 41a) is an ABS plastic material and said second component part (18; 32; 42a) is an MABS plastic material. a first injection moulded plastic component part (17; 31; 41a) having an associated first mating surface; a second injection moulded plastic component part (18; 32; 42a) having an associated second mating surface; and a seam (21; 33; 43a) formed by said first mating surface and said second mating surface during a two component injection moulding for joining said first component part and said second component part (17, 18; 31, 32; 41a, 42a; 41b, 42b; 41c, 42c; 41 d; 42d) to define a dispenser part, characterized in that a transverse cross section of the seam comprises at least one raised contact increasing means; the resulting seam (21; 33; 43a; 43b; 43d) has an impact strength equal to or greater than the strength of at least one of said first and second moulded plastic component parts (17, 18; 31, 32; 41a, 42a; 41b, 42b; 41c, 42c; 41 d; 42d) adjacent the seam (21; 33; 43a; 43b; 43c), wherein the seam (21; 33; 43a) has an impact strength of at least 10 Joules, preferably 15 Joules as measured by an impact strength test method, the method comprising: - using a 13 kg weight attached to an arm having a length of 0,75 m, the part of the weight arranged to impact a front surface of the dispenser part has an area corresponding to a flat rectangular area of about 63 cm 2 of 7 × 9 cm, - pivoting the arm to which the weight is attached from a vertical to a horizontal position, through an arc to an angle, and released, where the size of the arc corresponds to an impact strength of at least 10 Joules, preferably 15 Joules; and wherein each of said first component and said second component part (17, 18; 31, 32; 41a, 42a) is selected from the group ABS plastic material, or wherein said first component part (17; 31; 41a) is an ABS plastic material and said second component part (18; 32; 42a) is an MABS plastic material. - using a 13 kg weight attached to an arm having a length of 0,75 m, the part of the weight arranged to impact a front surface of the dispenser part has an area corresponding to a flat rectangular area of about 63 cm 2 of 7 × 9 cm, - pivoting the arm to which the weight is attached from a vertical to a horizontal position, through an arc to an angle, and released, where the size of the arc corresponds to an impact strength of at least 10 Joules, preferably 15 Joules; and wherein each of said first component and said second component part (17, 18; 31, 32; 41a, 42a) is selected from the group ABS plastic material, or wherein said first component part (17; 31; 41a) is an ABS plastic material and said second component part (18; 32; 42a) is an MABS plastic material.